Commit | Line | Data |
---|---|---|
c82ee6d3 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
af36d7f0 JG |
3 | * libata-scsi.c - helper library for ATA |
4 | * | |
af36d7f0 JG |
5 | * Copyright 2003-2004 Red Hat, Inc. All rights reserved. |
6 | * Copyright 2003-2004 Jeff Garzik | |
7 | * | |
af36d7f0 | 8 | * libata documentation is available via 'make {ps|pdf}docs', |
9bb9a39c | 9 | * as Documentation/driver-api/libata.rst |
af36d7f0 JG |
10 | * |
11 | * Hardware documentation available from | |
12 | * - http://www.t10.org/ | |
13 | * - http://www.t13.org/ | |
1da177e4 LT |
14 | */ |
15 | ||
75c0b0e1 | 16 | #include <linux/compat.h> |
5a0e3ad6 | 17 | #include <linux/slab.h> |
1da177e4 LT |
18 | #include <linux/kernel.h> |
19 | #include <linux/blkdev.h> | |
20 | #include <linux/spinlock.h> | |
38789fda | 21 | #include <linux/export.h> |
1da177e4 | 22 | #include <scsi/scsi.h> |
1da177e4 | 23 | #include <scsi/scsi_host.h> |
beb40487 | 24 | #include <scsi/scsi_cmnd.h> |
85837ebd | 25 | #include <scsi/scsi_eh.h> |
005a5a06 | 26 | #include <scsi/scsi_device.h> |
a6e6ce8e | 27 | #include <scsi/scsi_tcq.h> |
30afc84c | 28 | #include <scsi/scsi_transport.h> |
1da177e4 | 29 | #include <linux/libata.h> |
b095518e | 30 | #include <linux/hdreg.h> |
2dcb407e | 31 | #include <linux/uaccess.h> |
2a6e58d2 | 32 | #include <linux/suspend.h> |
18f0f978 | 33 | #include <asm/unaligned.h> |
8e061784 | 34 | #include <linux/ioprio.h> |
45b8084f | 35 | #include <linux/of.h> |
1da177e4 LT |
36 | |
37 | #include "libata.h" | |
d9027470 | 38 | #include "libata-transport.h" |
1da177e4 | 39 | |
673b2fe6 | 40 | #define ATA_SCSI_RBUF_SIZE 2048 |
87340e98 TH |
41 | |
42 | static DEFINE_SPINLOCK(ata_scsi_rbuf_lock); | |
43 | static u8 ata_scsi_rbuf[ATA_SCSI_RBUF_SIZE]; | |
b095518e | 44 | |
ad706991 | 45 | typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc); |
ab5b3a5b | 46 | |
2dcb407e | 47 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
ab5b3a5b | 48 | const struct scsi_device *scsidev); |
1da177e4 | 49 | |
62e4a60e DLM |
50 | #define RW_RECOVERY_MPAGE 0x1 |
51 | #define RW_RECOVERY_MPAGE_LEN 12 | |
52 | #define CACHE_MPAGE 0x8 | |
53 | #define CACHE_MPAGE_LEN 20 | |
54 | #define CONTROL_MPAGE 0xa | |
55 | #define CONTROL_MPAGE_LEN 12 | |
56 | #define ALL_MPAGES 0x3f | |
57 | #define ALL_SUB_MPAGES 0xff | |
673b2fe6 DLM |
58 | #define CDL_T2A_SUB_MPAGE 0x07 |
59 | #define CDL_T2B_SUB_MPAGE 0x08 | |
60 | #define CDL_T2_SUB_MPAGE_LEN 232 | |
df60f9c6 DLM |
61 | #define ATA_FEATURE_SUB_MPAGE 0xf2 |
62 | #define ATA_FEATURE_SUB_MPAGE_LEN 16 | |
00ac37f5 | 63 | |
24f75686 | 64 | static const u8 def_rw_recovery_mpage[RW_RECOVERY_MPAGE_LEN] = { |
00ac37f5 DG |
65 | RW_RECOVERY_MPAGE, |
66 | RW_RECOVERY_MPAGE_LEN - 2, | |
24f75686 | 67 | (1 << 7), /* AWRE */ |
00ac37f5 DG |
68 | 0, /* read retry count */ |
69 | 0, 0, 0, 0, | |
70 | 0, /* write retry count */ | |
71 | 0, 0, 0 | |
72 | }; | |
73 | ||
74 | static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = { | |
75 | CACHE_MPAGE, | |
76 | CACHE_MPAGE_LEN - 2, | |
77 | 0, /* contains WCE, needs to be 0 for logic */ | |
78 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
79 | 0, /* contains DRA, needs to be 0 for logic */ | |
80 | 0, 0, 0, 0, 0, 0, 0 | |
81 | }; | |
82 | ||
83 | static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = { | |
84 | CONTROL_MPAGE, | |
85 | CONTROL_MPAGE_LEN - 2, | |
86 | 2, /* DSENSE=0, GLTSD=1 */ | |
87 | 0, /* [QAM+QERR may be 1, see 05-359r1] */ | |
88 | 0, 0, 0, 0, 0xff, 0xff, | |
89 | 0, 30 /* extended self test time, see 05-359r1 */ | |
90 | }; | |
91 | ||
45fabbb7 EO |
92 | static ssize_t ata_scsi_park_show(struct device *device, |
93 | struct device_attribute *attr, char *buf) | |
94 | { | |
95 | struct scsi_device *sdev = to_scsi_device(device); | |
96 | struct ata_port *ap; | |
97 | struct ata_link *link; | |
98 | struct ata_device *dev; | |
3948b6f2 | 99 | unsigned long now; |
3f649ab7 | 100 | unsigned int msecs; |
45fabbb7 EO |
101 | int rc = 0; |
102 | ||
103 | ap = ata_shost_to_port(sdev->host); | |
104 | ||
3948b6f2 | 105 | spin_lock_irq(ap->lock); |
45fabbb7 EO |
106 | dev = ata_scsi_find_dev(ap, sdev); |
107 | if (!dev) { | |
108 | rc = -ENODEV; | |
109 | goto unlock; | |
110 | } | |
111 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { | |
112 | rc = -EOPNOTSUPP; | |
113 | goto unlock; | |
114 | } | |
115 | ||
116 | link = dev->link; | |
a464189d | 117 | now = jiffies; |
45fabbb7 EO |
118 | if (ap->pflags & ATA_PFLAG_EH_IN_PROGRESS && |
119 | link->eh_context.unloaded_mask & (1 << dev->devno) && | |
a464189d EO |
120 | time_after(dev->unpark_deadline, now)) |
121 | msecs = jiffies_to_msecs(dev->unpark_deadline - now); | |
45fabbb7 EO |
122 | else |
123 | msecs = 0; | |
124 | ||
125 | unlock: | |
126 | spin_unlock_irq(ap->lock); | |
127 | ||
0667391e | 128 | return rc ? rc : sysfs_emit(buf, "%u\n", msecs); |
45fabbb7 EO |
129 | } |
130 | ||
131 | static ssize_t ata_scsi_park_store(struct device *device, | |
132 | struct device_attribute *attr, | |
133 | const char *buf, size_t len) | |
134 | { | |
135 | struct scsi_device *sdev = to_scsi_device(device); | |
136 | struct ata_port *ap; | |
137 | struct ata_device *dev; | |
138 | long int input; | |
139 | unsigned long flags; | |
140 | int rc; | |
141 | ||
42b9ab7a JH |
142 | rc = kstrtol(buf, 10, &input); |
143 | if (rc) | |
144 | return rc; | |
145 | if (input < -2) | |
45fabbb7 EO |
146 | return -EINVAL; |
147 | if (input > ATA_TMOUT_MAX_PARK) { | |
148 | rc = -EOVERFLOW; | |
149 | input = ATA_TMOUT_MAX_PARK; | |
150 | } | |
151 | ||
152 | ap = ata_shost_to_port(sdev->host); | |
153 | ||
154 | spin_lock_irqsave(ap->lock, flags); | |
155 | dev = ata_scsi_find_dev(ap, sdev); | |
156 | if (unlikely(!dev)) { | |
157 | rc = -ENODEV; | |
158 | goto unlock; | |
159 | } | |
9162c657 HR |
160 | if (dev->class != ATA_DEV_ATA && |
161 | dev->class != ATA_DEV_ZAC) { | |
45fabbb7 EO |
162 | rc = -EOPNOTSUPP; |
163 | goto unlock; | |
164 | } | |
165 | ||
166 | if (input >= 0) { | |
167 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { | |
168 | rc = -EOPNOTSUPP; | |
169 | goto unlock; | |
170 | } | |
171 | ||
172 | dev->unpark_deadline = ata_deadline(jiffies, input); | |
173 | dev->link->eh_info.dev_action[dev->devno] |= ATA_EH_PARK; | |
174 | ata_port_schedule_eh(ap); | |
175 | complete(&ap->park_req_pending); | |
176 | } else { | |
177 | switch (input) { | |
178 | case -1: | |
179 | dev->flags &= ~ATA_DFLAG_NO_UNLOAD; | |
180 | break; | |
181 | case -2: | |
182 | dev->flags |= ATA_DFLAG_NO_UNLOAD; | |
183 | break; | |
184 | } | |
185 | } | |
186 | unlock: | |
187 | spin_unlock_irqrestore(ap->lock, flags); | |
188 | ||
189 | return rc ? rc : len; | |
190 | } | |
191 | DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR, | |
192 | ata_scsi_park_show, ata_scsi_park_store); | |
193 | EXPORT_SYMBOL_GPL(dev_attr_unload_heads); | |
194 | ||
4b89ad8e NC |
195 | bool ata_scsi_sense_is_valid(u8 sk, u8 asc, u8 ascq) |
196 | { | |
197 | /* | |
198 | * If sk == NO_SENSE, and asc + ascq == NO ADDITIONAL SENSE INFORMATION, | |
199 | * then there is no sense data to add. | |
200 | */ | |
201 | if (sk == 0 && asc == 0 && ascq == 0) | |
202 | return false; | |
203 | ||
204 | /* If sk > COMPLETED, sense data is bogus. */ | |
205 | if (sk > COMPLETED) | |
206 | return false; | |
207 | ||
208 | return true; | |
209 | } | |
210 | ||
06dbde5f HR |
211 | void ata_scsi_set_sense(struct ata_device *dev, struct scsi_cmnd *cmd, |
212 | u8 sk, u8 asc, u8 ascq) | |
f0761be3 | 213 | { |
06dbde5f HR |
214 | bool d_sense = (dev->flags & ATA_DFLAG_D_SENSE); |
215 | ||
f2b1e9c6 | 216 | scsi_build_sense(cmd, d_sense, sk, asc, ascq); |
f0761be3 TH |
217 | } |
218 | ||
492bf621 HR |
219 | void ata_scsi_set_sense_information(struct ata_device *dev, |
220 | struct scsi_cmnd *cmd, | |
221 | const struct ata_taskfile *tf) | |
222 | { | |
223 | u64 information; | |
224 | ||
492bf621 HR |
225 | information = ata_tf_read_block(tf, dev); |
226 | if (information == U64_MAX) | |
227 | return; | |
228 | ||
229 | scsi_set_sense_information(cmd->sense_buffer, | |
230 | SCSI_SENSE_BUFFERSIZE, information); | |
231 | } | |
232 | ||
bcfc867d | 233 | static void ata_scsi_set_invalid_field(struct ata_device *dev, |
0df10b84 | 234 | struct scsi_cmnd *cmd, u16 field, u8 bit) |
bcfc867d HR |
235 | { |
236 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x24, 0x0); | |
8554e5e1 | 237 | /* "Invalid field in CDB" */ |
bcfc867d | 238 | scsi_set_sense_field_pointer(cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE, |
0df10b84 | 239 | field, bit, 1); |
bcfc867d HR |
240 | } |
241 | ||
7780081c HR |
242 | static void ata_scsi_set_invalid_parameter(struct ata_device *dev, |
243 | struct scsi_cmnd *cmd, u16 field) | |
244 | { | |
245 | /* "Invalid field in parameter list" */ | |
246 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x26, 0x0); | |
247 | scsi_set_sense_field_pointer(cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE, | |
248 | field, 0xff, 0); | |
f0761be3 TH |
249 | } |
250 | ||
c3f69c7f BVA |
251 | static struct attribute *ata_common_sdev_attrs[] = { |
252 | &dev_attr_unload_heads.attr, | |
45fabbb7 EO |
253 | NULL |
254 | }; | |
c3f69c7f BVA |
255 | |
256 | static const struct attribute_group ata_common_sdev_attr_group = { | |
257 | .attrs = ata_common_sdev_attrs | |
258 | }; | |
259 | ||
260 | const struct attribute_group *ata_common_sdev_groups[] = { | |
261 | &ata_common_sdev_attr_group, | |
262 | NULL | |
263 | }; | |
264 | EXPORT_SYMBOL_GPL(ata_common_sdev_groups); | |
45fabbb7 | 265 | |
1da177e4 LT |
266 | /** |
267 | * ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd. | |
268 | * @sdev: SCSI device for which BIOS geometry is to be determined | |
269 | * @bdev: block device associated with @sdev | |
270 | * @capacity: capacity of SCSI device | |
271 | * @geom: location to which geometry will be output | |
272 | * | |
273 | * Generic bios head/sector/cylinder calculator | |
274 | * used by sd. Most BIOSes nowadays expect a XXX/255/16 (CHS) | |
275 | * mapping. Some situations may arise where the disk is not | |
276 | * bootable if this is not used. | |
277 | * | |
278 | * LOCKING: | |
279 | * Defined by the SCSI layer. We don't really care. | |
280 | * | |
281 | * RETURNS: | |
282 | * Zero. | |
283 | */ | |
284 | int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, | |
285 | sector_t capacity, int geom[]) | |
286 | { | |
287 | geom[0] = 255; | |
288 | geom[1] = 63; | |
289 | sector_div(capacity, 255*63); | |
290 | geom[2] = capacity; | |
291 | ||
292 | return 0; | |
293 | } | |
a52fbcfc | 294 | EXPORT_SYMBOL_GPL(ata_std_bios_param); |
1da177e4 | 295 | |
d8d9129e TH |
296 | /** |
297 | * ata_scsi_unlock_native_capacity - unlock native capacity | |
298 | * @sdev: SCSI device to adjust device capacity for | |
299 | * | |
300 | * This function is called if a partition on @sdev extends beyond | |
301 | * the end of the device. It requests EH to unlock HPA. | |
302 | * | |
303 | * LOCKING: | |
304 | * Defined by the SCSI layer. Might sleep. | |
305 | */ | |
306 | void ata_scsi_unlock_native_capacity(struct scsi_device *sdev) | |
307 | { | |
308 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
309 | struct ata_device *dev; | |
310 | unsigned long flags; | |
311 | ||
312 | spin_lock_irqsave(ap->lock, flags); | |
313 | ||
314 | dev = ata_scsi_find_dev(ap, sdev); | |
315 | if (dev && dev->n_sectors < dev->n_native_sectors) { | |
316 | dev->flags |= ATA_DFLAG_UNLOCK_HPA; | |
317 | dev->link->eh_info.action |= ATA_EH_RESET; | |
318 | ata_port_schedule_eh(ap); | |
319 | } | |
320 | ||
321 | spin_unlock_irqrestore(ap->lock, flags); | |
322 | ata_port_wait_eh(ap); | |
323 | } | |
a52fbcfc | 324 | EXPORT_SYMBOL_GPL(ata_scsi_unlock_native_capacity); |
d8d9129e | 325 | |
5924b74c TH |
326 | /** |
327 | * ata_get_identity - Handler for HDIO_GET_IDENTITY ioctl | |
5eb66fe0 | 328 | * @ap: target port |
5924b74c TH |
329 | * @sdev: SCSI device to get identify data for |
330 | * @arg: User buffer area for identify data | |
331 | * | |
332 | * LOCKING: | |
333 | * Defined by the SCSI layer. We don't really care. | |
334 | * | |
335 | * RETURNS: | |
336 | * Zero on success, negative errno on error. | |
337 | */ | |
94be9a58 JG |
338 | static int ata_get_identity(struct ata_port *ap, struct scsi_device *sdev, |
339 | void __user *arg) | |
5924b74c | 340 | { |
5924b74c TH |
341 | struct ata_device *dev = ata_scsi_find_dev(ap, sdev); |
342 | u16 __user *dst = arg; | |
343 | char buf[40]; | |
344 | ||
345 | if (!dev) | |
346 | return -ENOMSG; | |
347 | ||
348 | if (copy_to_user(dst, dev->id, ATA_ID_WORDS * sizeof(u16))) | |
349 | return -EFAULT; | |
350 | ||
351 | ata_id_string(dev->id, buf, ATA_ID_PROD, ATA_ID_PROD_LEN); | |
352 | if (copy_to_user(dst + ATA_ID_PROD, buf, ATA_ID_PROD_LEN)) | |
353 | return -EFAULT; | |
354 | ||
355 | ata_id_string(dev->id, buf, ATA_ID_FW_REV, ATA_ID_FW_REV_LEN); | |
356 | if (copy_to_user(dst + ATA_ID_FW_REV, buf, ATA_ID_FW_REV_LEN)) | |
357 | return -EFAULT; | |
358 | ||
359 | ata_id_string(dev->id, buf, ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
360 | if (copy_to_user(dst + ATA_ID_SERNO, buf, ATA_ID_SERNO_LEN)) | |
361 | return -EFAULT; | |
362 | ||
363 | return 0; | |
364 | } | |
365 | ||
b095518e JG |
366 | /** |
367 | * ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl | |
8e8b77dd | 368 | * @scsidev: Device to which we are issuing command |
b095518e JG |
369 | * @arg: User provided data for issuing command |
370 | * | |
371 | * LOCKING: | |
372 | * Defined by the SCSI layer. We don't really care. | |
373 | * | |
374 | * RETURNS: | |
375 | * Zero on success, negative errno on error. | |
376 | */ | |
b095518e JG |
377 | int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg) |
378 | { | |
379 | int rc = 0; | |
429296cc | 380 | u8 sensebuf[SCSI_SENSE_BUFFERSIZE]; |
b095518e | 381 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
429296cc | 382 | u8 args[4], *argbuf = NULL; |
b095518e | 383 | int argsize = 0; |
76aaf87b | 384 | struct scsi_sense_hdr sshdr; |
5fa7b072 MC |
385 | const struct scsi_exec_args exec_args = { |
386 | .sshdr = &sshdr, | |
387 | .sense = sensebuf, | |
388 | .sense_len = sizeof(sensebuf), | |
389 | }; | |
bbe1fe7e | 390 | int cmd_result; |
b095518e | 391 | |
c893a3ae | 392 | if (arg == NULL) |
b095518e JG |
393 | return -EINVAL; |
394 | ||
395 | if (copy_from_user(args, arg, sizeof(args))) | |
396 | return -EFAULT; | |
397 | ||
429296cc | 398 | memset(sensebuf, 0, sizeof(sensebuf)); |
b095518e JG |
399 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
400 | ||
401 | if (args[3]) { | |
295124dc | 402 | argsize = ATA_SECT_SIZE * args[3]; |
b095518e | 403 | argbuf = kmalloc(argsize, GFP_KERNEL); |
54dac83c JR |
404 | if (argbuf == NULL) { |
405 | rc = -ENOMEM; | |
406 | goto error; | |
407 | } | |
b095518e JG |
408 | |
409 | scsi_cmd[1] = (4 << 1); /* PIO Data-in */ | |
410 | scsi_cmd[2] = 0x0e; /* no off.line or cc, read from dev, | |
2dcb407e | 411 | block count in sector count field */ |
b095518e JG |
412 | } else { |
413 | scsi_cmd[1] = (3 << 1); /* Non-data */ | |
bbe1fe7e | 414 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
b095518e JG |
415 | } |
416 | ||
417 | scsi_cmd[0] = ATA_16; | |
418 | ||
419 | scsi_cmd[4] = args[2]; | |
a4f19040 | 420 | if (args[0] == ATA_CMD_SMART) { /* hack -- ide driver does this too */ |
b095518e JG |
421 | scsi_cmd[6] = args[3]; |
422 | scsi_cmd[8] = args[1]; | |
f355eece LW |
423 | scsi_cmd[10] = ATA_SMART_LBAM_PASS; |
424 | scsi_cmd[12] = ATA_SMART_LBAH_PASS; | |
b095518e JG |
425 | } else { |
426 | scsi_cmd[6] = args[1]; | |
427 | } | |
428 | scsi_cmd[14] = args[0]; | |
429 | ||
430 | /* Good values for timeout and retries? Values below | |
431 | from scsi_ioctl_send_command() for default case... */ | |
5fa7b072 MC |
432 | cmd_result = scsi_execute_cmd(scsidev, scsi_cmd, REQ_OP_DRV_IN, argbuf, |
433 | argsize, 10 * HZ, 5, &exec_args); | |
ced202f7 HR |
434 | if (cmd_result < 0) { |
435 | rc = cmd_result; | |
436 | goto error; | |
437 | } | |
464a00c9 | 438 | if (scsi_sense_valid(&sshdr)) {/* sense data available */ |
bbe1fe7e | 439 | u8 *desc = sensebuf + 8; |
bbe1fe7e ET |
440 | |
441 | /* If we set cc then ATA pass-through will cause a | |
442 | * check condition even if no error. Filter that. */ | |
464a00c9 | 443 | if (scsi_status_is_check_condition(cmd_result)) { |
6d3bfc7b KM |
444 | if (sshdr.sense_key == RECOVERED_ERROR && |
445 | sshdr.asc == 0 && sshdr.ascq == 0x1d) | |
bbe1fe7e ET |
446 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
447 | } | |
448 | ||
449 | /* Send userspace a few ATA registers (same as drivers/ide) */ | |
2dcb407e JG |
450 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ |
451 | desc[0] == 0x09) { /* code is "ATA Descriptor" */ | |
452 | args[0] = desc[13]; /* status */ | |
453 | args[1] = desc[3]; /* error */ | |
454 | args[2] = desc[5]; /* sector count (0:7) */ | |
bbe1fe7e ET |
455 | if (copy_to_user(arg, args, sizeof(args))) |
456 | rc = -EFAULT; | |
457 | } | |
458 | } | |
459 | ||
460 | ||
461 | if (cmd_result) { | |
b095518e JG |
462 | rc = -EIO; |
463 | goto error; | |
464 | } | |
465 | ||
b095518e | 466 | if ((argbuf) |
c893a3ae | 467 | && copy_to_user(arg + sizeof(args), argbuf, argsize)) |
b095518e JG |
468 | rc = -EFAULT; |
469 | error: | |
8f760780 | 470 | kfree(argbuf); |
b095518e JG |
471 | return rc; |
472 | } | |
473 | ||
474 | /** | |
475 | * ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl | |
8e8b77dd | 476 | * @scsidev: Device to which we are issuing command |
b095518e JG |
477 | * @arg: User provided data for issuing command |
478 | * | |
479 | * LOCKING: | |
480 | * Defined by the SCSI layer. We don't really care. | |
481 | * | |
482 | * RETURNS: | |
483 | * Zero on success, negative errno on error. | |
484 | */ | |
485 | int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg) | |
486 | { | |
487 | int rc = 0; | |
429296cc | 488 | u8 sensebuf[SCSI_SENSE_BUFFERSIZE]; |
b095518e | 489 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
429296cc | 490 | u8 args[7]; |
76aaf87b | 491 | struct scsi_sense_hdr sshdr; |
af068bd1 | 492 | int cmd_result; |
5fa7b072 MC |
493 | const struct scsi_exec_args exec_args = { |
494 | .sshdr = &sshdr, | |
495 | .sense = sensebuf, | |
496 | .sense_len = sizeof(sensebuf), | |
497 | }; | |
b095518e | 498 | |
c893a3ae | 499 | if (arg == NULL) |
b095518e JG |
500 | return -EINVAL; |
501 | ||
502 | if (copy_from_user(args, arg, sizeof(args))) | |
503 | return -EFAULT; | |
504 | ||
429296cc | 505 | memset(sensebuf, 0, sizeof(sensebuf)); |
b095518e JG |
506 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
507 | scsi_cmd[0] = ATA_16; | |
508 | scsi_cmd[1] = (3 << 1); /* Non-data */ | |
af068bd1 | 509 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
b095518e JG |
510 | scsi_cmd[4] = args[1]; |
511 | scsi_cmd[6] = args[2]; | |
512 | scsi_cmd[8] = args[3]; | |
513 | scsi_cmd[10] = args[4]; | |
514 | scsi_cmd[12] = args[5]; | |
277239f2 | 515 | scsi_cmd[13] = args[6] & 0x4f; |
b095518e JG |
516 | scsi_cmd[14] = args[0]; |
517 | ||
b095518e | 518 | /* Good values for timeout and retries? Values below |
2e9edbf8 | 519 | from scsi_ioctl_send_command() for default case... */ |
5fa7b072 MC |
520 | cmd_result = scsi_execute_cmd(scsidev, scsi_cmd, REQ_OP_DRV_IN, NULL, |
521 | 0, 10 * HZ, 5, &exec_args); | |
ced202f7 HR |
522 | if (cmd_result < 0) { |
523 | rc = cmd_result; | |
524 | goto error; | |
525 | } | |
464a00c9 | 526 | if (scsi_sense_valid(&sshdr)) {/* sense data available */ |
af068bd1 | 527 | u8 *desc = sensebuf + 8; |
af068bd1 DM |
528 | |
529 | /* If we set cc then ATA pass-through will cause a | |
530 | * check condition even if no error. Filter that. */ | |
531 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { | |
6d3bfc7b KM |
532 | if (sshdr.sense_key == RECOVERED_ERROR && |
533 | sshdr.asc == 0 && sshdr.ascq == 0x1d) | |
af068bd1 DM |
534 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
535 | } | |
536 | ||
537 | /* Send userspace ATA registers */ | |
538 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ | |
539 | desc[0] == 0x09) {/* code is "ATA Descriptor" */ | |
540 | args[0] = desc[13]; /* status */ | |
541 | args[1] = desc[3]; /* error */ | |
542 | args[2] = desc[5]; /* sector count (0:7) */ | |
543 | args[3] = desc[7]; /* lbal */ | |
544 | args[4] = desc[9]; /* lbam */ | |
545 | args[5] = desc[11]; /* lbah */ | |
546 | args[6] = desc[12]; /* select */ | |
547 | if (copy_to_user(arg, args, sizeof(args))) | |
548 | rc = -EFAULT; | |
549 | } | |
550 | } | |
551 | ||
552 | if (cmd_result) { | |
b095518e | 553 | rc = -EIO; |
af068bd1 DM |
554 | goto error; |
555 | } | |
b095518e | 556 | |
af068bd1 | 557 | error: |
b095518e JG |
558 | return rc; |
559 | } | |
560 | ||
0184898d | 561 | static bool ata_ioc32(struct ata_port *ap) |
e3cf95dd AC |
562 | { |
563 | if (ap->flags & ATA_FLAG_PIO_DMA) | |
0184898d | 564 | return true; |
e3cf95dd | 565 | if (ap->pflags & ATA_PFLAG_PIO32) |
0184898d SS |
566 | return true; |
567 | return false; | |
e3cf95dd AC |
568 | } |
569 | ||
75c0b0e1 AB |
570 | /* |
571 | * This handles both native and compat commands, so anything added | |
572 | * here must have a compatible argument, or check in_compat_syscall() | |
573 | */ | |
94be9a58 | 574 | int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev, |
6f4e626f | 575 | unsigned int cmd, void __user *arg) |
1da177e4 | 576 | { |
287e6611 AB |
577 | unsigned long val; |
578 | int rc = -EINVAL; | |
e3cf95dd | 579 | unsigned long flags; |
1da177e4 | 580 | |
1da177e4 | 581 | switch (cmd) { |
287e6611 | 582 | case HDIO_GET_32BIT: |
e3cf95dd AC |
583 | spin_lock_irqsave(ap->lock, flags); |
584 | val = ata_ioc32(ap); | |
585 | spin_unlock_irqrestore(ap->lock, flags); | |
75c0b0e1 AB |
586 | #ifdef CONFIG_COMPAT |
587 | if (in_compat_syscall()) | |
588 | return put_user(val, (compat_ulong_t __user *)arg); | |
589 | #endif | |
287e6611 | 590 | return put_user(val, (unsigned long __user *)arg); |
1da177e4 | 591 | |
287e6611 | 592 | case HDIO_SET_32BIT: |
1da177e4 | 593 | val = (unsigned long) arg; |
e3cf95dd AC |
594 | rc = 0; |
595 | spin_lock_irqsave(ap->lock, flags); | |
596 | if (ap->pflags & ATA_PFLAG_PIO32CHANGE) { | |
597 | if (val) | |
598 | ap->pflags |= ATA_PFLAG_PIO32; | |
599 | else | |
600 | ap->pflags &= ~ATA_PFLAG_PIO32; | |
601 | } else { | |
602 | if (val != ata_ioc32(ap)) | |
603 | rc = -EINVAL; | |
604 | } | |
605 | spin_unlock_irqrestore(ap->lock, flags); | |
606 | return rc; | |
1da177e4 | 607 | |
5924b74c | 608 | case HDIO_GET_IDENTITY: |
94be9a58 | 609 | return ata_get_identity(ap, scsidev, arg); |
5924b74c | 610 | |
b095518e JG |
611 | case HDIO_DRIVE_CMD: |
612 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
613 | return -EACCES; | |
614 | return ata_cmd_ioctl(scsidev, arg); | |
615 | ||
616 | case HDIO_DRIVE_TASK: | |
617 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
618 | return -EACCES; | |
619 | return ata_task_ioctl(scsidev, arg); | |
620 | ||
1da177e4 LT |
621 | default: |
622 | rc = -ENOTTY; | |
623 | break; | |
624 | } | |
625 | ||
1da177e4 LT |
626 | return rc; |
627 | } | |
94be9a58 JG |
628 | EXPORT_SYMBOL_GPL(ata_sas_scsi_ioctl); |
629 | ||
6f4e626f NC |
630 | int ata_scsi_ioctl(struct scsi_device *scsidev, unsigned int cmd, |
631 | void __user *arg) | |
94be9a58 JG |
632 | { |
633 | return ata_sas_scsi_ioctl(ata_shost_to_port(scsidev->host), | |
634 | scsidev, cmd, arg); | |
635 | } | |
636 | EXPORT_SYMBOL_GPL(ata_scsi_ioctl); | |
1da177e4 LT |
637 | |
638 | /** | |
639 | * ata_scsi_qc_new - acquire new ata_queued_cmd reference | |
1da177e4 LT |
640 | * @dev: ATA device to which the new command is attached |
641 | * @cmd: SCSI command that originated this ATA command | |
1da177e4 LT |
642 | * |
643 | * Obtain a reference to an unused ata_queued_cmd structure, | |
644 | * which is the basic libata structure representing a single | |
645 | * ATA command sent to the hardware. | |
646 | * | |
647 | * If a command was available, fill in the SCSI-specific | |
648 | * portions of the structure with information on the | |
649 | * current command. | |
650 | * | |
651 | * LOCKING: | |
cca3974e | 652 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
653 | * |
654 | * RETURNS: | |
655 | * Command allocated, or %NULL if none available. | |
656 | */ | |
7102d230 | 657 | static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev, |
b27dcfb0 | 658 | struct scsi_cmnd *cmd) |
1da177e4 | 659 | { |
4f1a22ee | 660 | struct ata_port *ap = dev->link->ap; |
1da177e4 | 661 | struct ata_queued_cmd *qc; |
4f1a22ee JG |
662 | int tag; |
663 | ||
4cb7c6f1 | 664 | if (unlikely(ata_port_is_frozen(ap))) |
4f1a22ee JG |
665 | goto fail; |
666 | ||
667 | if (ap->flags & ATA_FLAG_SAS_HOST) { | |
668 | /* | |
669 | * SAS hosts may queue > ATA_MAX_QUEUE commands so use | |
670 | * unique per-device budget token as a tag. | |
671 | */ | |
672 | if (WARN_ON_ONCE(cmd->budget_token >= ATA_MAX_QUEUE)) | |
673 | goto fail; | |
674 | tag = cmd->budget_token; | |
675 | } else { | |
676 | tag = scsi_cmd_to_rq(cmd)->tag; | |
677 | } | |
1da177e4 | 678 | |
4f1a22ee JG |
679 | qc = __ata_qc_from_tag(ap, tag); |
680 | qc->tag = qc->hw_tag = tag; | |
681 | qc->ap = ap; | |
682 | qc->dev = dev; | |
1da177e4 | 683 | |
4f1a22ee | 684 | ata_qc_reinit(qc); |
7eb49509 | 685 | |
4f1a22ee JG |
686 | qc->scsicmd = cmd; |
687 | qc->scsidone = scsi_done; | |
688 | ||
689 | qc->sg = scsi_sglist(cmd); | |
690 | qc->n_elem = scsi_sg_count(cmd); | |
691 | ||
692 | if (scsi_cmd_to_rq(cmd)->rq_flags & RQF_QUIET) | |
693 | qc->flags |= ATA_QCFLAG_QUIET; | |
1da177e4 LT |
694 | |
695 | return qc; | |
4f1a22ee JG |
696 | |
697 | fail: | |
698 | set_host_byte(cmd, DID_OK); | |
699 | set_status_byte(cmd, SAM_STAT_TASK_SET_FULL); | |
700 | scsi_done(cmd); | |
701 | return NULL; | |
1da177e4 LT |
702 | } |
703 | ||
aacda375 TH |
704 | static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc) |
705 | { | |
706 | struct scsi_cmnd *scmd = qc->scsicmd; | |
707 | ||
bdf8710d | 708 | qc->extrabytes = scmd->extra_len; |
aacda375 TH |
709 | qc->nbytes = scsi_bufflen(scmd) + qc->extrabytes; |
710 | } | |
711 | ||
b095518e JG |
712 | /** |
713 | * ata_dump_status - user friendly display of error info | |
41d4c60f | 714 | * @ap: the port in question |
b095518e JG |
715 | * @tf: ptr to filled out taskfile |
716 | * | |
717 | * Decode and dump the ATA error/status registers for the user so | |
718 | * that they have some idea what really happened at the non | |
719 | * make-believe layer. | |
720 | * | |
721 | * LOCKING: | |
722 | * inherited from caller | |
723 | */ | |
41d4c60f | 724 | static void ata_dump_status(struct ata_port *ap, struct ata_taskfile *tf) |
b095518e | 725 | { |
efcef265 | 726 | u8 stat = tf->status, err = tf->error; |
b095518e | 727 | |
b095518e | 728 | if (stat & ATA_BUSY) { |
41d4c60f | 729 | ata_port_warn(ap, "status=0x%02x {Busy} ", stat); |
b095518e | 730 | } else { |
41d4c60f HR |
731 | ata_port_warn(ap, "status=0x%02x { %s%s%s%s%s%s%s} ", stat, |
732 | stat & ATA_DRDY ? "DriveReady " : "", | |
733 | stat & ATA_DF ? "DeviceFault " : "", | |
734 | stat & ATA_DSC ? "SeekComplete " : "", | |
735 | stat & ATA_DRQ ? "DataRequest " : "", | |
736 | stat & ATA_CORR ? "CorrectedError " : "", | |
737 | stat & ATA_SENSE ? "Sense " : "", | |
738 | stat & ATA_ERR ? "Error " : ""); | |
739 | if (err) | |
740 | ata_port_warn(ap, "error=0x%02x {%s%s%s%s%s%s", err, | |
741 | err & ATA_ABORTED ? | |
742 | "DriveStatusError " : "", | |
743 | err & ATA_ICRC ? | |
744 | (err & ATA_ABORTED ? | |
745 | "BadCRC " : "Sector ") : "", | |
746 | err & ATA_UNC ? "UncorrectableError " : "", | |
747 | err & ATA_IDNF ? "SectorIdNotFound " : "", | |
748 | err & ATA_TRK0NF ? "TrackZeroNotFound " : "", | |
749 | err & ATA_AMNF ? "AddrMarkNotFound " : ""); | |
b095518e JG |
750 | } |
751 | } | |
752 | ||
1da177e4 LT |
753 | /** |
754 | * ata_to_sense_error - convert ATA error to SCSI error | |
8e8b77dd | 755 | * @id: ATA device number |
1da177e4 | 756 | * @drv_stat: value contained in ATA status register |
b095518e JG |
757 | * @drv_err: value contained in ATA error register |
758 | * @sk: the sense key we'll fill out | |
759 | * @asc: the additional sense code we'll fill out | |
760 | * @ascq: the additional sense code qualifier we'll fill out | |
246619da | 761 | * @verbose: be verbose |
1da177e4 | 762 | * |
b095518e JG |
763 | * Converts an ATA error into a SCSI error. Fill out pointers to |
764 | * SK, ASC, and ASCQ bytes for later use in fixed or descriptor | |
765 | * format sense blocks. | |
1da177e4 LT |
766 | * |
767 | * LOCKING: | |
cca3974e | 768 | * spin_lock_irqsave(host lock) |
1da177e4 | 769 | */ |
7102d230 AB |
770 | static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, |
771 | u8 *asc, u8 *ascq, int verbose) | |
1da177e4 | 772 | { |
b095518e | 773 | int i; |
ffe75ef6 | 774 | |
1da177e4 | 775 | /* Based on the 3ware driver translation table */ |
98ac62de | 776 | static const unsigned char sense_table[][4] = { |
1da177e4 | 777 | /* BBD|ECC|ID|MAR */ |
8ae72044 HR |
778 | {0xd1, ABORTED_COMMAND, 0x00, 0x00}, |
779 | // Device busy Aborted command | |
1da177e4 | 780 | /* BBD|ECC|ID */ |
8ae72044 HR |
781 | {0xd0, ABORTED_COMMAND, 0x00, 0x00}, |
782 | // Device busy Aborted command | |
1da177e4 | 783 | /* ECC|MC|MARK */ |
8ae72044 HR |
784 | {0x61, HARDWARE_ERROR, 0x00, 0x00}, |
785 | // Device fault Hardware error | |
1da177e4 | 786 | /* ICRC|ABRT */ /* NB: ICRC & !ABRT is BBD */ |
8ae72044 HR |
787 | {0x84, ABORTED_COMMAND, 0x47, 0x00}, |
788 | // Data CRC error SCSI parity error | |
1da177e4 | 789 | /* MC|ID|ABRT|TRK0|MARK */ |
8ae72044 HR |
790 | {0x37, NOT_READY, 0x04, 0x00}, |
791 | // Unit offline Not ready | |
1da177e4 | 792 | /* MCR|MARK */ |
8ae72044 HR |
793 | {0x09, NOT_READY, 0x04, 0x00}, |
794 | // Unrecovered disk error Not ready | |
1da177e4 | 795 | /* Bad address mark */ |
8ae72044 HR |
796 | {0x01, MEDIUM_ERROR, 0x13, 0x00}, |
797 | // Address mark not found for data field | |
798 | /* TRK0 - Track 0 not found */ | |
799 | {0x02, HARDWARE_ERROR, 0x00, 0x00}, | |
800 | // Hardware error | |
78062c50 | 801 | /* Abort: 0x04 is not translated here, see below */ |
1da177e4 | 802 | /* Media change request */ |
8ae72044 HR |
803 | {0x08, NOT_READY, 0x04, 0x00}, |
804 | // FIXME: faking offline | |
805 | /* SRV/IDNF - ID not found */ | |
806 | {0x10, ILLEGAL_REQUEST, 0x21, 0x00}, | |
807 | // Logical address out of range | |
808 | /* MC - Media Changed */ | |
809 | {0x20, UNIT_ATTENTION, 0x28, 0x00}, | |
810 | // Not ready to ready change, medium may have changed | |
811 | /* ECC - Uncorrectable ECC error */ | |
812 | {0x40, MEDIUM_ERROR, 0x11, 0x04}, | |
813 | // Unrecovered read error | |
1da177e4 | 814 | /* BBD - block marked bad */ |
8ae72044 HR |
815 | {0x80, MEDIUM_ERROR, 0x11, 0x04}, |
816 | // Block marked bad Medium error, unrecovered read error | |
1da177e4 LT |
817 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
818 | }; | |
98ac62de | 819 | static const unsigned char stat_table[][4] = { |
1da177e4 | 820 | /* Must be first because BUSY means no other bits valid */ |
8ae72044 HR |
821 | {0x80, ABORTED_COMMAND, 0x47, 0x00}, |
822 | // Busy, fake parity for now | |
823 | {0x40, ILLEGAL_REQUEST, 0x21, 0x04}, | |
824 | // Device ready, unaligned write command | |
825 | {0x20, HARDWARE_ERROR, 0x44, 0x00}, | |
826 | // Device fault, internal target failure | |
827 | {0x08, ABORTED_COMMAND, 0x47, 0x00}, | |
828 | // Timed out in xfer, fake parity for now | |
829 | {0x04, RECOVERED_ERROR, 0x11, 0x00}, | |
830 | // Recovered ECC error Medium error, recovered | |
1da177e4 LT |
831 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
832 | }; | |
1da177e4 | 833 | |
1da177e4 LT |
834 | /* |
835 | * Is this an error we can process/parse | |
836 | */ | |
b095518e JG |
837 | if (drv_stat & ATA_BUSY) { |
838 | drv_err = 0; /* Ignore the err bits, they're invalid */ | |
1da177e4 | 839 | } |
b095518e JG |
840 | |
841 | if (drv_err) { | |
842 | /* Look for drv_err */ | |
843 | for (i = 0; sense_table[i][0] != 0xFF; i++) { | |
844 | /* Look for best matches first */ | |
2e9edbf8 | 845 | if ((sense_table[i][0] & drv_err) == |
b095518e JG |
846 | sense_table[i][0]) { |
847 | *sk = sense_table[i][1]; | |
848 | *asc = sense_table[i][2]; | |
849 | *ascq = sense_table[i][3]; | |
850 | goto translate_done; | |
851 | } | |
852 | } | |
1da177e4 | 853 | } |
b095518e | 854 | |
78062c50 GG |
855 | /* |
856 | * Fall back to interpreting status bits. Note that if the drv_err | |
857 | * has only the ABRT bit set, we decode drv_stat. ABRT by itself | |
858 | * is not descriptive enough. | |
859 | */ | |
b095518e JG |
860 | for (i = 0; stat_table[i][0] != 0xFF; i++) { |
861 | if (stat_table[i][0] & drv_stat) { | |
862 | *sk = stat_table[i][1]; | |
863 | *asc = stat_table[i][2]; | |
864 | *ascq = stat_table[i][3]; | |
865 | goto translate_done; | |
1da177e4 | 866 | } |
b095518e | 867 | } |
b095518e | 868 | |
78062c50 GG |
869 | /* |
870 | * We need a sensible error return here, which is tricky, and one | |
871 | * that won't cause people to do things like return a disk wrongly. | |
872 | */ | |
2d202024 AC |
873 | *sk = ABORTED_COMMAND; |
874 | *asc = 0x00; | |
875 | *ascq = 0x00; | |
b095518e JG |
876 | |
877 | translate_done: | |
246619da | 878 | if (verbose) |
6ef56325 | 879 | pr_err("ata%u: translated ATA stat/err 0x%02x/%02x to SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n", |
246619da | 880 | id, drv_stat, drv_err, *sk, *asc, *ascq); |
b095518e JG |
881 | return; |
882 | } | |
883 | ||
884 | /* | |
750426aa | 885 | * ata_gen_passthru_sense - Generate check condition sense block. |
b095518e JG |
886 | * @qc: Command that completed. |
887 | * | |
888 | * This function is specific to the ATA descriptor format sense | |
889 | * block specified for the ATA pass through commands. Regardless | |
890 | * of whether the command errored or not, return a sense | |
891 | * block. Copy all controller registers into the sense | |
84a9a8cd GG |
892 | * block. If there was no error, we get the request from an ATA |
893 | * passthrough command, so we use the following sense data: | |
894 | * sk = RECOVERED ERROR | |
895 | * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE | |
896 | * | |
b095518e JG |
897 | * |
898 | * LOCKING: | |
750426aa | 899 | * None. |
b095518e | 900 | */ |
750426aa | 901 | static void ata_gen_passthru_sense(struct ata_queued_cmd *qc) |
b095518e JG |
902 | { |
903 | struct scsi_cmnd *cmd = qc->scsicmd; | |
e61e0672 | 904 | struct ata_taskfile *tf = &qc->result_tf; |
b095518e JG |
905 | unsigned char *sb = cmd->sense_buffer; |
906 | unsigned char *desc = sb + 8; | |
246619da | 907 | int verbose = qc->ap->ops->error_handler == NULL; |
b525e773 | 908 | u8 sense_key, asc, ascq; |
b095518e JG |
909 | |
910 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); | |
911 | ||
b095518e JG |
912 | /* |
913 | * Use ata_to_sense_error() to map status register bits | |
914 | * onto sense key, asc & ascq. | |
915 | */ | |
058e55e1 | 916 | if (qc->err_mask || |
efcef265 SS |
917 | tf->status & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { |
918 | ata_to_sense_error(qc->ap->print_id, tf->status, tf->error, | |
b525e773 | 919 | &sense_key, &asc, &ascq, verbose); |
06dbde5f | 920 | ata_scsi_set_sense(qc->dev, cmd, sense_key, asc, ascq); |
84a9a8cd | 921 | } else { |
11093cb1 HR |
922 | /* |
923 | * ATA PASS-THROUGH INFORMATION AVAILABLE | |
924 | * Always in descriptor format sense. | |
925 | */ | |
f2b1e9c6 | 926 | scsi_build_sense(cmd, 1, RECOVERED_ERROR, 0, 0x1D); |
1da177e4 LT |
927 | } |
928 | ||
11093cb1 HR |
929 | if ((cmd->sense_buffer[0] & 0x7f) >= 0x72) { |
930 | u8 len; | |
931 | ||
932 | /* descriptor format */ | |
933 | len = sb[7]; | |
934 | desc = (char *)scsi_sense_desc_find(sb, len + 8, 9); | |
935 | if (!desc) { | |
936 | if (SCSI_SENSE_BUFFERSIZE < len + 14) | |
937 | return; | |
938 | sb[7] = len + 14; | |
939 | desc = sb + 8 + len; | |
940 | } | |
941 | desc[0] = 9; | |
942 | desc[1] = 12; | |
943 | /* | |
944 | * Copy registers into sense buffer. | |
945 | */ | |
946 | desc[2] = 0x00; | |
efcef265 | 947 | desc[3] = tf->error; |
11093cb1 HR |
948 | desc[5] = tf->nsect; |
949 | desc[7] = tf->lbal; | |
950 | desc[9] = tf->lbam; | |
951 | desc[11] = tf->lbah; | |
952 | desc[12] = tf->device; | |
efcef265 | 953 | desc[13] = tf->status; |
b095518e | 954 | |
11093cb1 HR |
955 | /* |
956 | * Fill in Extend bit, and the high order bytes | |
957 | * if applicable. | |
958 | */ | |
959 | if (tf->flags & ATA_TFLAG_LBA48) { | |
960 | desc[2] |= 0x01; | |
961 | desc[4] = tf->hob_nsect; | |
962 | desc[6] = tf->hob_lbal; | |
963 | desc[8] = tf->hob_lbam; | |
964 | desc[10] = tf->hob_lbah; | |
965 | } | |
966 | } else { | |
967 | /* Fixed sense format */ | |
efcef265 SS |
968 | desc[0] = tf->error; |
969 | desc[1] = tf->status; | |
11093cb1 HR |
970 | desc[2] = tf->device; |
971 | desc[3] = tf->nsect; | |
e0029dcb | 972 | desc[7] = 0; |
11093cb1 HR |
973 | if (tf->flags & ATA_TFLAG_LBA48) { |
974 | desc[8] |= 0x80; | |
975 | if (tf->hob_nsect) | |
976 | desc[8] |= 0x40; | |
977 | if (tf->hob_lbal || tf->hob_lbam || tf->hob_lbah) | |
978 | desc[8] |= 0x20; | |
979 | } | |
980 | desc[9] = tf->lbal; | |
981 | desc[10] = tf->lbam; | |
982 | desc[11] = tf->lbah; | |
1da177e4 | 983 | } |
b095518e | 984 | } |
1da177e4 | 985 | |
b095518e | 986 | /** |
750426aa | 987 | * ata_gen_ata_sense - generate a SCSI fixed sense block |
b095518e JG |
988 | * @qc: Command that we are erroring out |
989 | * | |
d25614ba | 990 | * Generate sense block for a failed ATA command @qc. Descriptor |
25985edc | 991 | * format is used to accommodate LBA48 block address. |
b095518e JG |
992 | * |
993 | * LOCKING: | |
750426aa | 994 | * None. |
b095518e | 995 | */ |
750426aa | 996 | static void ata_gen_ata_sense(struct ata_queued_cmd *qc) |
b095518e | 997 | { |
d25614ba | 998 | struct ata_device *dev = qc->dev; |
b095518e | 999 | struct scsi_cmnd *cmd = qc->scsicmd; |
e61e0672 | 1000 | struct ata_taskfile *tf = &qc->result_tf; |
b095518e | 1001 | unsigned char *sb = cmd->sense_buffer; |
246619da | 1002 | int verbose = qc->ap->ops->error_handler == NULL; |
d25614ba | 1003 | u64 block; |
b525e773 | 1004 | u8 sense_key, asc, ascq; |
b095518e JG |
1005 | |
1006 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); | |
1007 | ||
59f68474 HR |
1008 | if (ata_dev_disabled(dev)) { |
1009 | /* Device disabled after error recovery */ | |
1010 | /* LOGICAL UNIT NOT READY, HARD RESET REQUIRED */ | |
1011 | ata_scsi_set_sense(dev, cmd, NOT_READY, 0x04, 0x21); | |
1012 | return; | |
1013 | } | |
d25614ba | 1014 | /* Use ata_to_sense_error() to map status register bits |
b095518e JG |
1015 | * onto sense key, asc & ascq. |
1016 | */ | |
058e55e1 | 1017 | if (qc->err_mask || |
efcef265 SS |
1018 | tf->status & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { |
1019 | ata_to_sense_error(qc->ap->print_id, tf->status, tf->error, | |
b525e773 | 1020 | &sense_key, &asc, &ascq, verbose); |
06dbde5f | 1021 | ata_scsi_set_sense(dev, cmd, sense_key, asc, ascq); |
5e6acd1c HR |
1022 | } else { |
1023 | /* Could not decode error */ | |
1024 | ata_dev_warn(dev, "could not decode error status 0x%x err_mask 0x%x\n", | |
efcef265 | 1025 | tf->status, qc->err_mask); |
06dbde5f | 1026 | ata_scsi_set_sense(dev, cmd, ABORTED_COMMAND, 0, 0); |
5e6acd1c | 1027 | return; |
1da177e4 | 1028 | } |
1da177e4 | 1029 | |
d25614ba | 1030 | block = ata_tf_read_block(&qc->result_tf, dev); |
cffd1ee9 HR |
1031 | if (block == U64_MAX) |
1032 | return; | |
a7dac447 | 1033 | |
cf8b49b0 | 1034 | scsi_set_sense_information(sb, SCSI_SENSE_BUFFERSIZE, block); |
1da177e4 LT |
1035 | } |
1036 | ||
15964ff7 | 1037 | void ata_scsi_sdev_config(struct scsi_device *sdev) |
a6cce2a7 BK |
1038 | { |
1039 | sdev->use_10_for_rw = 1; | |
1040 | sdev->use_10_for_ms = 1; | |
e185934f | 1041 | sdev->no_write_same = 1; |
31cc23b3 TH |
1042 | |
1043 | /* Schedule policy is determined by ->qc_defer() callback and | |
1044 | * it needs to see every deferred qc. Set dev_blocked to 1 to | |
1045 | * prevent SCSI midlayer from automatically deferring | |
1046 | * requests. | |
1047 | */ | |
1048 | sdev->max_device_blocked = 1; | |
a6cce2a7 BK |
1049 | } |
1050 | ||
fa2fc7f4 | 1051 | /** |
94bd5719 | 1052 | * ata_scsi_dma_need_drain - Check whether data transfer may overflow |
73fd8b6d | 1053 | * @rq: request to be checked |
fa2fc7f4 JB |
1054 | * |
1055 | * ATAPI commands which transfer variable length data to host | |
c9b5560a | 1056 | * might overflow due to application error or hardware bug. This |
fa2fc7f4 JB |
1057 | * function checks whether overflow should be drained and ignored |
1058 | * for @request. | |
1059 | * | |
1060 | * LOCKING: | |
1061 | * None. | |
1062 | * | |
1063 | * RETURNS: | |
1064 | * 1 if ; otherwise, 0. | |
1065 | */ | |
cc97923a | 1066 | bool ata_scsi_dma_need_drain(struct request *rq) |
fa2fc7f4 | 1067 | { |
ce70fd9a CH |
1068 | struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq); |
1069 | ||
1070 | return atapi_cmd_type(scmd->cmnd[0]) == ATAPI_MISC; | |
fa2fc7f4 | 1071 | } |
cc97923a | 1072 | EXPORT_SYMBOL_GPL(ata_scsi_dma_need_drain); |
fa2fc7f4 | 1073 | |
15964ff7 | 1074 | int ata_scsi_dev_config(struct scsi_device *sdev, struct ata_device *dev) |
a6cce2a7 | 1075 | { |
900e599e | 1076 | struct request_queue *q = sdev->request_queue; |
6a8438de | 1077 | int depth = 1; |
900e599e | 1078 | |
45fabbb7 EO |
1079 | if (!ata_id_has_unload(dev->id)) |
1080 | dev->flags |= ATA_DFLAG_NO_UNLOAD; | |
1081 | ||
914ed354 | 1082 | /* configure max sectors */ |
0568e612 | 1083 | dev->max_sectors = min(dev->max_sectors, sdev->host->max_sectors); |
900e599e | 1084 | blk_queue_max_hw_sectors(q, dev->max_sectors); |
a6cce2a7 | 1085 | |
fa2fc7f4 | 1086 | if (dev->class == ATA_DEV_ATAPI) { |
729a6a30 TH |
1087 | sdev->sector_size = ATA_SECT_SIZE; |
1088 | ||
1089 | /* set DMA padding */ | |
900e599e | 1090 | blk_queue_update_dma_pad(q, ATA_DMA_PAD_SZ - 1); |
fa2fc7f4 | 1091 | |
cc97923a CH |
1092 | /* make room for appending the drain */ |
1093 | blk_queue_max_segments(q, queue_max_segments(q) - 1); | |
1094 | ||
1095 | sdev->dma_drain_len = ATAPI_MAX_DRAIN; | |
ce288e05 | 1096 | sdev->dma_drain_buf = kmalloc(sdev->dma_drain_len, GFP_NOIO); |
cc97923a | 1097 | if (!sdev->dma_drain_buf) { |
a9a79dfe | 1098 | ata_dev_err(dev, "drain buffer allocation failed\n"); |
fa2fc7f4 JB |
1099 | return -ENOMEM; |
1100 | } | |
fa2fc7f4 | 1101 | } else { |
295124dc | 1102 | sdev->sector_size = ata_id_logical_sector_size(dev->id); |
d8cf5389 | 1103 | sdev->manage_start_stop = 1; |
dde20207 | 1104 | } |
d8cf5389 | 1105 | |
729a6a30 TH |
1106 | /* |
1107 | * ata_pio_sectors() expects buffer for each sector to not cross | |
1108 | * page boundary. Enforce it by requiring buffers to be sector | |
1109 | * aligned, which works iff sector_size is not larger than | |
1110 | * PAGE_SIZE. ATAPI devices also need the alignment as | |
1111 | * IDENTIFY_PACKET is executed as ATA_PROT_PIO. | |
1112 | */ | |
1113 | if (sdev->sector_size > PAGE_SIZE) | |
a9a79dfe | 1114 | ata_dev_warn(dev, |
729a6a30 TH |
1115 | "sector_size=%u > PAGE_SIZE, PIO may malfunction\n", |
1116 | sdev->sector_size); | |
1117 | ||
900e599e | 1118 | blk_queue_update_dma_alignment(q, sdev->sector_size - 1); |
729a6a30 | 1119 | |
f26792d5 JG |
1120 | if (dev->flags & ATA_DFLAG_AN) |
1121 | set_bit(SDEV_EVT_MEDIA_CHANGE, sdev->supported_events); | |
1122 | ||
43cff7d9 | 1123 | if (ata_ncq_supported(dev)) |
a6e6ce8e | 1124 | depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id)); |
6a8438de DLM |
1125 | depth = min(ATA_MAX_QUEUE, depth); |
1126 | scsi_change_queue_depth(sdev, depth); | |
fa2fc7f4 | 1127 | |
d80210f2 CH |
1128 | if (dev->flags & ATA_DFLAG_TRUSTED) |
1129 | sdev->security_supported = 1; | |
1130 | ||
295124dc | 1131 | dev->sdev = sdev; |
fa2fc7f4 | 1132 | return 0; |
a6cce2a7 BK |
1133 | } |
1134 | ||
1da177e4 LT |
1135 | /** |
1136 | * ata_scsi_slave_config - Set SCSI device attributes | |
1137 | * @sdev: SCSI device to examine | |
1138 | * | |
1139 | * This is called before we actually start reading | |
1140 | * and writing to the device, to configure certain | |
1141 | * SCSI mid-layer behaviors. | |
1142 | * | |
1143 | * LOCKING: | |
1144 | * Defined by SCSI layer. We don't really care. | |
1145 | */ | |
1146 | ||
1147 | int ata_scsi_slave_config(struct scsi_device *sdev) | |
1148 | { | |
31534363 TH |
1149 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
1150 | struct ata_device *dev = __ata_scsi_find_dev(ap, sdev); | |
fa2fc7f4 | 1151 | int rc = 0; |
31534363 | 1152 | |
a6cce2a7 | 1153 | ata_scsi_sdev_config(sdev); |
1da177e4 | 1154 | |
31534363 | 1155 | if (dev) |
fa2fc7f4 | 1156 | rc = ata_scsi_dev_config(sdev, dev); |
1da177e4 | 1157 | |
fa2fc7f4 | 1158 | return rc; |
1da177e4 | 1159 | } |
a52fbcfc | 1160 | EXPORT_SYMBOL_GPL(ata_scsi_slave_config); |
1da177e4 | 1161 | |
83c47bcb TH |
1162 | /** |
1163 | * ata_scsi_slave_destroy - SCSI device is about to be destroyed | |
1164 | * @sdev: SCSI device to be destroyed | |
1165 | * | |
1166 | * @sdev is about to be destroyed for hot/warm unplugging. If | |
1167 | * this unplugging was initiated by libata as indicated by NULL | |
1168 | * dev->sdev, this function doesn't have to do anything. | |
1169 | * Otherwise, SCSI layer initiated warm-unplug is in progress. | |
1170 | * Clear dev->sdev, schedule the device for ATA detach and invoke | |
1171 | * EH. | |
1172 | * | |
1173 | * LOCKING: | |
1174 | * Defined by SCSI layer. We don't really care. | |
1175 | */ | |
1176 | void ata_scsi_slave_destroy(struct scsi_device *sdev) | |
1177 | { | |
1178 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
1179 | unsigned long flags; | |
1180 | struct ata_device *dev; | |
1181 | ||
1182 | if (!ap->ops->error_handler) | |
1183 | return; | |
1184 | ||
ba6a1308 | 1185 | spin_lock_irqsave(ap->lock, flags); |
83c47bcb TH |
1186 | dev = __ata_scsi_find_dev(ap, sdev); |
1187 | if (dev && dev->sdev) { | |
1188 | /* SCSI device already in CANCEL state, no need to offline it */ | |
1189 | dev->sdev = NULL; | |
1190 | dev->flags |= ATA_DFLAG_DETACH; | |
1191 | ata_port_schedule_eh(ap); | |
1192 | } | |
ba6a1308 | 1193 | spin_unlock_irqrestore(ap->lock, flags); |
fa2fc7f4 | 1194 | |
cc97923a | 1195 | kfree(sdev->dma_drain_buf); |
83c47bcb | 1196 | } |
a52fbcfc | 1197 | EXPORT_SYMBOL_GPL(ata_scsi_slave_destroy); |
83c47bcb | 1198 | |
972dcafb DG |
1199 | /** |
1200 | * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command | |
1201 | * @qc: Storage for translated ATA taskfile | |
972dcafb DG |
1202 | * |
1203 | * Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY | |
1204 | * (to start). Perhaps these commands should be preceded by | |
1205 | * CHECK POWER MODE to see what power mode the device is already in. | |
1206 | * [See SAT revision 5 at www.t10.org] | |
1207 | * | |
1208 | * LOCKING: | |
cca3974e | 1209 | * spin_lock_irqsave(host lock) |
972dcafb DG |
1210 | * |
1211 | * RETURNS: | |
1212 | * Zero on success, non-zero on error. | |
1213 | */ | |
ad706991 | 1214 | static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc) |
972dcafb | 1215 | { |
542b1444 | 1216 | struct scsi_cmnd *scmd = qc->scsicmd; |
972dcafb | 1217 | struct ata_taskfile *tf = &qc->tf; |
ad706991 | 1218 | const u8 *cdb = scmd->cmnd; |
bcfc867d | 1219 | u16 fp; |
0df10b84 | 1220 | u8 bp = 0xff; |
972dcafb | 1221 | |
bcfc867d HR |
1222 | if (scmd->cmd_len < 5) { |
1223 | fp = 4; | |
2e5704f6 | 1224 | goto invalid_fld; |
bcfc867d | 1225 | } |
2e5704f6 | 1226 | |
972dcafb DG |
1227 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
1228 | tf->protocol = ATA_PROT_NODATA; | |
542b1444 | 1229 | if (cdb[1] & 0x1) { |
972dcafb DG |
1230 | ; /* ignore IMMED bit, violates sat-r05 */ |
1231 | } | |
bcfc867d HR |
1232 | if (cdb[4] & 0x2) { |
1233 | fp = 4; | |
0df10b84 | 1234 | bp = 1; |
ae006510 | 1235 | goto invalid_fld; /* LOEJ bit set not supported */ |
bcfc867d HR |
1236 | } |
1237 | if (((cdb[4] >> 4) & 0xf) != 0) { | |
1238 | fp = 4; | |
0df10b84 | 1239 | bp = 3; |
ae006510 | 1240 | goto invalid_fld; /* power conditions not supported */ |
bcfc867d | 1241 | } |
e31e8531 | 1242 | |
542b1444 | 1243 | if (cdb[4] & 0x1) { |
972dcafb | 1244 | tf->nsect = 1; /* 1 sector, lba=0 */ |
9d5b1302 AL |
1245 | |
1246 | if (qc->dev->flags & ATA_DFLAG_LBA) { | |
c44078c0 | 1247 | tf->flags |= ATA_TFLAG_LBA; |
9d5b1302 AL |
1248 | |
1249 | tf->lbah = 0x0; | |
1250 | tf->lbam = 0x0; | |
1251 | tf->lbal = 0x0; | |
1252 | tf->device |= ATA_LBA; | |
1253 | } else { | |
1254 | /* CHS */ | |
1255 | tf->lbal = 0x1; /* sect */ | |
1256 | tf->lbam = 0x0; /* cyl low */ | |
1257 | tf->lbah = 0x0; /* cyl high */ | |
1258 | } | |
1259 | ||
972dcafb | 1260 | tf->command = ATA_CMD_VERIFY; /* READ VERIFY */ |
920a4b10 | 1261 | } else { |
2a6e58d2 RW |
1262 | /* Some odd clown BIOSen issue spindown on power off (ACPI S4 |
1263 | * or S5) causing some drives to spin up and down again. | |
1264 | */ | |
1265 | if ((qc->ap->flags & ATA_FLAG_NO_POWEROFF_SPINDOWN) && | |
1266 | system_state == SYSTEM_POWER_OFF) | |
1267 | goto skip; | |
1268 | ||
1269 | if ((qc->ap->flags & ATA_FLAG_NO_HIBERNATE_SPINDOWN) && | |
1270 | system_entering_hibernation()) | |
1271 | goto skip; | |
1272 | ||
78981a7c RH |
1273 | /* Issue ATA STANDBY IMMEDIATE command */ |
1274 | tf->command = ATA_CMD_STANDBYNOW1; | |
920a4b10 | 1275 | } |
78981a7c | 1276 | |
972dcafb DG |
1277 | /* |
1278 | * Standby and Idle condition timers could be implemented but that | |
1279 | * would require libata to implement the Power condition mode page | |
1280 | * and allow the user to change it. Changing mode pages requires | |
1281 | * MODE SELECT to be implemented. | |
1282 | */ | |
1283 | ||
1284 | return 0; | |
ae006510 | 1285 | |
2a6e58d2 | 1286 | invalid_fld: |
0df10b84 | 1287 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); |
ae006510 | 1288 | return 1; |
2a6e58d2 RW |
1289 | skip: |
1290 | scmd->result = SAM_STAT_GOOD; | |
1291 | return 1; | |
972dcafb DG |
1292 | } |
1293 | ||
1294 | ||
1da177e4 LT |
1295 | /** |
1296 | * ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command | |
1297 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1298 | * |
1299 | * Sets up an ATA taskfile to issue FLUSH CACHE or | |
1300 | * FLUSH CACHE EXT. | |
1301 | * | |
1302 | * LOCKING: | |
cca3974e | 1303 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1304 | * |
1305 | * RETURNS: | |
1306 | * Zero on success, non-zero on error. | |
1307 | */ | |
ad706991 | 1308 | static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc) |
1da177e4 LT |
1309 | { |
1310 | struct ata_taskfile *tf = &qc->tf; | |
1311 | ||
1312 | tf->flags |= ATA_TFLAG_DEVICE; | |
1313 | tf->protocol = ATA_PROT_NODATA; | |
1314 | ||
6fc49adb | 1315 | if (qc->dev->flags & ATA_DFLAG_FLUSH_EXT) |
1da177e4 LT |
1316 | tf->command = ATA_CMD_FLUSH_EXT; |
1317 | else | |
1318 | tf->command = ATA_CMD_FLUSH; | |
1319 | ||
b666da35 TH |
1320 | /* flush is critical for IO integrity, consider it an IO command */ |
1321 | qc->flags |= ATA_QCFLAG_IO; | |
1322 | ||
1da177e4 LT |
1323 | return 0; |
1324 | } | |
1325 | ||
3aef5231 AL |
1326 | /** |
1327 | * scsi_6_lba_len - Get LBA and transfer length | |
542b1444 | 1328 | * @cdb: SCSI command to translate |
3aef5231 AL |
1329 | * |
1330 | * Calculate LBA and transfer length for 6-byte commands. | |
1331 | * | |
1332 | * RETURNS: | |
1333 | * @plba: the LBA | |
1334 | * @plen: the transfer length | |
1335 | */ | |
542b1444 | 1336 | static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 AL |
1337 | { |
1338 | u64 lba = 0; | |
6c7b7d2b | 1339 | u32 len; |
3aef5231 | 1340 | |
6c7b7d2b | 1341 | lba |= ((u64)(cdb[1] & 0x1f)) << 16; |
542b1444 TH |
1342 | lba |= ((u64)cdb[2]) << 8; |
1343 | lba |= ((u64)cdb[3]); | |
3aef5231 | 1344 | |
6c7b7d2b | 1345 | len = cdb[4]; |
3aef5231 AL |
1346 | |
1347 | *plba = lba; | |
1348 | *plen = len; | |
1349 | } | |
1350 | ||
1351 | /** | |
1352 | * scsi_10_lba_len - Get LBA and transfer length | |
542b1444 | 1353 | * @cdb: SCSI command to translate |
3aef5231 AL |
1354 | * |
1355 | * Calculate LBA and transfer length for 10-byte commands. | |
1356 | * | |
1357 | * RETURNS: | |
1358 | * @plba: the LBA | |
1359 | * @plen: the transfer length | |
1360 | */ | |
6e163f9b | 1361 | static inline void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 | 1362 | { |
6e163f9b DLM |
1363 | *plba = get_unaligned_be32(&cdb[2]); |
1364 | *plen = get_unaligned_be16(&cdb[7]); | |
3aef5231 AL |
1365 | } |
1366 | ||
1367 | /** | |
1368 | * scsi_16_lba_len - Get LBA and transfer length | |
542b1444 | 1369 | * @cdb: SCSI command to translate |
3aef5231 AL |
1370 | * |
1371 | * Calculate LBA and transfer length for 16-byte commands. | |
1372 | * | |
1373 | * RETURNS: | |
1374 | * @plba: the LBA | |
1375 | * @plen: the transfer length | |
1376 | */ | |
6e163f9b | 1377 | static inline void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 | 1378 | { |
6e163f9b DLM |
1379 | *plba = get_unaligned_be64(&cdb[2]); |
1380 | *plen = get_unaligned_be32(&cdb[10]); | |
3aef5231 AL |
1381 | } |
1382 | ||
eafe804b DLM |
1383 | /** |
1384 | * scsi_dld - Get duration limit descriptor index | |
1385 | * @cdb: SCSI command to translate | |
1386 | * | |
1387 | * Returns the dld bits indicating the index of a command duration limit | |
1388 | * descriptor. | |
1389 | */ | |
1390 | static inline int scsi_dld(const u8 *cdb) | |
1391 | { | |
1392 | return ((cdb[1] & 0x01) << 2) | ((cdb[14] >> 6) & 0x03); | |
1393 | } | |
1394 | ||
1da177e4 LT |
1395 | /** |
1396 | * ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one | |
1397 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1398 | * |
1399 | * Converts SCSI VERIFY command to an ATA READ VERIFY command. | |
1400 | * | |
1401 | * LOCKING: | |
cca3974e | 1402 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1403 | * |
1404 | * RETURNS: | |
1405 | * Zero on success, non-zero on error. | |
1406 | */ | |
ad706991 | 1407 | static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 1408 | { |
542b1444 | 1409 | struct scsi_cmnd *scmd = qc->scsicmd; |
1da177e4 | 1410 | struct ata_taskfile *tf = &qc->tf; |
8bf62ece | 1411 | struct ata_device *dev = qc->dev; |
1da177e4 | 1412 | u64 dev_sectors = qc->dev->n_sectors; |
ad706991 | 1413 | const u8 *cdb = scmd->cmnd; |
3aef5231 AL |
1414 | u64 block; |
1415 | u32 n_block; | |
bcfc867d | 1416 | u16 fp; |
1da177e4 LT |
1417 | |
1418 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
1419 | tf->protocol = ATA_PROT_NODATA; | |
1da177e4 | 1420 | |
59b00404 SS |
1421 | switch (cdb[0]) { |
1422 | case VERIFY: | |
bcfc867d HR |
1423 | if (scmd->cmd_len < 10) { |
1424 | fp = 9; | |
2e5704f6 | 1425 | goto invalid_fld; |
bcfc867d | 1426 | } |
542b1444 | 1427 | scsi_10_lba_len(cdb, &block, &n_block); |
59b00404 SS |
1428 | break; |
1429 | case VERIFY_16: | |
bcfc867d HR |
1430 | if (scmd->cmd_len < 16) { |
1431 | fp = 15; | |
2e5704f6 | 1432 | goto invalid_fld; |
bcfc867d | 1433 | } |
542b1444 | 1434 | scsi_16_lba_len(cdb, &block, &n_block); |
59b00404 SS |
1435 | break; |
1436 | default: | |
bcfc867d | 1437 | fp = 0; |
ae006510 | 1438 | goto invalid_fld; |
bcfc867d | 1439 | } |
1da177e4 | 1440 | |
8bf62ece | 1441 | if (!n_block) |
ae006510 | 1442 | goto nothing_to_do; |
8bf62ece | 1443 | if (block >= dev_sectors) |
ae006510 | 1444 | goto out_of_range; |
8bf62ece | 1445 | if ((block + n_block) > dev_sectors) |
ae006510 | 1446 | goto out_of_range; |
1da177e4 | 1447 | |
07506697 AL |
1448 | if (dev->flags & ATA_DFLAG_LBA) { |
1449 | tf->flags |= ATA_TFLAG_LBA; | |
1450 | ||
c6a33e24 AL |
1451 | if (lba_28_ok(block, n_block)) { |
1452 | /* use LBA28 */ | |
1453 | tf->command = ATA_CMD_VERIFY; | |
1454 | tf->device |= (block >> 24) & 0xf; | |
1455 | } else if (lba_48_ok(block, n_block)) { | |
1456 | if (!(dev->flags & ATA_DFLAG_LBA48)) | |
1457 | goto out_of_range; | |
07506697 AL |
1458 | |
1459 | /* use LBA48 */ | |
1460 | tf->flags |= ATA_TFLAG_LBA48; | |
8bf62ece | 1461 | tf->command = ATA_CMD_VERIFY_EXT; |
1da177e4 | 1462 | |
8bf62ece | 1463 | tf->hob_nsect = (n_block >> 8) & 0xff; |
1da177e4 | 1464 | |
8bf62ece AL |
1465 | tf->hob_lbah = (block >> 40) & 0xff; |
1466 | tf->hob_lbam = (block >> 32) & 0xff; | |
1467 | tf->hob_lbal = (block >> 24) & 0xff; | |
c6a33e24 AL |
1468 | } else |
1469 | /* request too large even for LBA48 */ | |
1470 | goto out_of_range; | |
8bf62ece AL |
1471 | |
1472 | tf->nsect = n_block & 0xff; | |
1da177e4 | 1473 | |
8bf62ece AL |
1474 | tf->lbah = (block >> 16) & 0xff; |
1475 | tf->lbam = (block >> 8) & 0xff; | |
1476 | tf->lbal = block & 0xff; | |
1da177e4 | 1477 | |
8bf62ece AL |
1478 | tf->device |= ATA_LBA; |
1479 | } else { | |
1480 | /* CHS */ | |
1481 | u32 sect, head, cyl, track; | |
1482 | ||
c6a33e24 AL |
1483 | if (!lba_28_ok(block, n_block)) |
1484 | goto out_of_range; | |
07506697 | 1485 | |
8bf62ece AL |
1486 | /* Convert LBA to CHS */ |
1487 | track = (u32)block / dev->sectors; | |
1488 | cyl = track / dev->heads; | |
1489 | head = track % dev->heads; | |
1490 | sect = (u32)block % dev->sectors + 1; | |
1491 | ||
2e9edbf8 JG |
1492 | /* Check whether the converted CHS can fit. |
1493 | Cylinder: 0-65535 | |
8bf62ece AL |
1494 | Head: 0-15 |
1495 | Sector: 1-255*/ | |
2e9edbf8 | 1496 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
ae006510 | 1497 | goto out_of_range; |
2e9edbf8 | 1498 | |
8bf62ece AL |
1499 | tf->command = ATA_CMD_VERIFY; |
1500 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ | |
1501 | tf->lbal = sect; | |
1502 | tf->lbam = cyl; | |
1503 | tf->lbah = cyl >> 8; | |
1504 | tf->device |= head; | |
1505 | } | |
1da177e4 LT |
1506 | |
1507 | return 0; | |
ae006510 DG |
1508 | |
1509 | invalid_fld: | |
0df10b84 | 1510 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
ae006510 DG |
1511 | return 1; |
1512 | ||
1513 | out_of_range: | |
06dbde5f | 1514 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
ae006510 DG |
1515 | /* "Logical Block Address out of range" */ |
1516 | return 1; | |
1517 | ||
1518 | nothing_to_do: | |
542b1444 | 1519 | scmd->result = SAM_STAT_GOOD; |
ae006510 | 1520 | return 1; |
1da177e4 LT |
1521 | } |
1522 | ||
2d727150 JA |
1523 | static bool ata_check_nblocks(struct scsi_cmnd *scmd, u32 n_blocks) |
1524 | { | |
c8329cd5 | 1525 | struct request *rq = scsi_cmd_to_rq(scmd); |
2d727150 JA |
1526 | u32 req_blocks; |
1527 | ||
1528 | if (!blk_rq_is_passthrough(rq)) | |
1529 | return true; | |
1530 | ||
1531 | req_blocks = blk_rq_bytes(rq) / scmd->device->sector_size; | |
1532 | if (n_blocks > req_blocks) | |
1533 | return false; | |
1534 | ||
1535 | return true; | |
1536 | } | |
1537 | ||
1da177e4 LT |
1538 | /** |
1539 | * ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one | |
1540 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1541 | * |
1542 | * Converts any of six SCSI read/write commands into the | |
1543 | * ATA counterpart, including starting sector (LBA), | |
1544 | * sector count, and taking into account the device's LBA48 | |
1545 | * support. | |
1546 | * | |
1547 | * Commands %READ_6, %READ_10, %READ_16, %WRITE_6, %WRITE_10, and | |
1548 | * %WRITE_16 are currently supported. | |
1549 | * | |
1550 | * LOCKING: | |
cca3974e | 1551 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1552 | * |
1553 | * RETURNS: | |
1554 | * Zero on success, non-zero on error. | |
1555 | */ | |
ad706991 | 1556 | static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 1557 | { |
542b1444 | 1558 | struct scsi_cmnd *scmd = qc->scsicmd; |
ad706991 | 1559 | const u8 *cdb = scmd->cmnd; |
c8329cd5 | 1560 | struct request *rq = scsi_cmd_to_rq(scmd); |
8e061784 | 1561 | int class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq)); |
bd056d7e | 1562 | unsigned int tf_flags = 0; |
eafe804b | 1563 | int dld = 0; |
3aef5231 AL |
1564 | u64 block; |
1565 | u32 n_block; | |
bd056d7e | 1566 | int rc; |
bcfc867d | 1567 | u16 fp = 0; |
1da177e4 | 1568 | |
59b00404 SS |
1569 | switch (cdb[0]) { |
1570 | case WRITE_6: | |
1571 | case WRITE_10: | |
1572 | case WRITE_16: | |
bd056d7e | 1573 | tf_flags |= ATA_TFLAG_WRITE; |
59b00404 SS |
1574 | break; |
1575 | } | |
1da177e4 | 1576 | |
9a3dccc4 | 1577 | /* Calculate the SCSI LBA, transfer length and FUA. */ |
542b1444 | 1578 | switch (cdb[0]) { |
3aef5231 AL |
1579 | case READ_10: |
1580 | case WRITE_10: | |
bcfc867d HR |
1581 | if (unlikely(scmd->cmd_len < 10)) { |
1582 | fp = 9; | |
2e5704f6 | 1583 | goto invalid_fld; |
bcfc867d | 1584 | } |
542b1444 | 1585 | scsi_10_lba_len(cdb, &block, &n_block); |
3e451a49 | 1586 | if (cdb[1] & (1 << 3)) |
bd056d7e | 1587 | tf_flags |= ATA_TFLAG_FUA; |
2d727150 JA |
1588 | if (!ata_check_nblocks(scmd, n_block)) |
1589 | goto invalid_fld; | |
3aef5231 AL |
1590 | break; |
1591 | case READ_6: | |
1592 | case WRITE_6: | |
bcfc867d HR |
1593 | if (unlikely(scmd->cmd_len < 6)) { |
1594 | fp = 5; | |
2e5704f6 | 1595 | goto invalid_fld; |
bcfc867d | 1596 | } |
542b1444 | 1597 | scsi_6_lba_len(cdb, &block, &n_block); |
c187c4b5 AL |
1598 | |
1599 | /* for 6-byte r/w commands, transfer length 0 | |
1600 | * means 256 blocks of data, not 0 block. | |
1601 | */ | |
76b2bf9b JG |
1602 | if (!n_block) |
1603 | n_block = 256; | |
2d727150 JA |
1604 | if (!ata_check_nblocks(scmd, n_block)) |
1605 | goto invalid_fld; | |
3aef5231 AL |
1606 | break; |
1607 | case READ_16: | |
1608 | case WRITE_16: | |
bcfc867d HR |
1609 | if (unlikely(scmd->cmd_len < 16)) { |
1610 | fp = 15; | |
2e5704f6 | 1611 | goto invalid_fld; |
bcfc867d | 1612 | } |
542b1444 | 1613 | scsi_16_lba_len(cdb, &block, &n_block); |
eafe804b | 1614 | dld = scsi_dld(cdb); |
3e451a49 | 1615 | if (cdb[1] & (1 << 3)) |
bd056d7e | 1616 | tf_flags |= ATA_TFLAG_FUA; |
2d727150 JA |
1617 | if (!ata_check_nblocks(scmd, n_block)) |
1618 | goto invalid_fld; | |
3aef5231 AL |
1619 | break; |
1620 | default: | |
bcfc867d | 1621 | fp = 0; |
ae006510 | 1622 | goto invalid_fld; |
1da177e4 LT |
1623 | } |
1624 | ||
8bf62ece AL |
1625 | /* Check and compose ATA command */ |
1626 | if (!n_block) | |
c187c4b5 AL |
1627 | /* For 10-byte and 16-byte SCSI R/W commands, transfer |
1628 | * length 0 means transfer 0 block of data. | |
1629 | * However, for ATA R/W commands, sector count 0 means | |
1630 | * 256 or 65536 sectors, not 0 sectors as in SCSI. | |
f51750d5 AC |
1631 | * |
1632 | * WARNING: one or two older ATA drives treat 0 as 0... | |
c187c4b5 | 1633 | */ |
ae006510 | 1634 | goto nothing_to_do; |
1da177e4 | 1635 | |
bd056d7e | 1636 | qc->flags |= ATA_QCFLAG_IO; |
295124dc | 1637 | qc->nbytes = n_block * scmd->device->sector_size; |
1da177e4 | 1638 | |
eafe804b | 1639 | rc = ata_build_rw_tf(qc, block, n_block, tf_flags, dld, class); |
bd056d7e TH |
1640 | if (likely(rc == 0)) |
1641 | return 0; | |
ae006510 | 1642 | |
bd056d7e TH |
1643 | if (rc == -ERANGE) |
1644 | goto out_of_range; | |
1645 | /* treat all other errors as -EINVAL, fall through */ | |
ae006510 | 1646 | invalid_fld: |
0df10b84 | 1647 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
ae006510 DG |
1648 | return 1; |
1649 | ||
1650 | out_of_range: | |
06dbde5f | 1651 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
ae006510 DG |
1652 | /* "Logical Block Address out of range" */ |
1653 | return 1; | |
1654 | ||
1655 | nothing_to_do: | |
542b1444 | 1656 | scmd->result = SAM_STAT_GOOD; |
ae006510 | 1657 | return 1; |
1da177e4 LT |
1658 | } |
1659 | ||
2aa8f5d6 CH |
1660 | static void ata_qc_done(struct ata_queued_cmd *qc) |
1661 | { | |
1662 | struct scsi_cmnd *cmd = qc->scsicmd; | |
1663 | void (*done)(struct scsi_cmnd *) = qc->scsidone; | |
1664 | ||
1665 | ata_qc_free(qc); | |
1666 | done(cmd); | |
1667 | } | |
1668 | ||
77853bf2 | 1669 | static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) |
1da177e4 | 1670 | { |
c31f571d | 1671 | struct ata_port *ap = qc->ap; |
1da177e4 | 1672 | struct scsi_cmnd *cmd = qc->scsicmd; |
a7dac447 | 1673 | u8 *cdb = cmd->cmnd; |
7574a837 NC |
1674 | int need_sense = (qc->err_mask != 0) && |
1675 | !(qc->flags & ATA_QCFLAG_SENSE_VALID); | |
b095518e JG |
1676 | |
1677 | /* For ATA pass thru (SAT) commands, generate a sense block if | |
1678 | * user mandated it or if there's an error. Note that if we | |
84a9a8cd GG |
1679 | * generate because the user forced us to [CK_COND =1], a check |
1680 | * condition is generated and the ATA register values are returned | |
b095518e | 1681 | * whether the command completed successfully or not. If there |
84a9a8cd GG |
1682 | * was no error, we use the following sense data: |
1683 | * sk = RECOVERED ERROR | |
1684 | * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE | |
b095518e | 1685 | */ |
a7dac447 | 1686 | if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) && |
25c7ce7f | 1687 | ((cdb[2] & 0x20) || need_sense)) |
750426aa | 1688 | ata_gen_passthru_sense(qc); |
25c7ce7f CH |
1689 | else if (need_sense) |
1690 | ata_gen_ata_sense(qc); | |
1691 | else | |
7574a837 NC |
1692 | /* Keep the SCSI ML and status byte, clear host byte. */ |
1693 | cmd->result &= 0x0000ffff; | |
1da177e4 | 1694 | |
c31f571d | 1695 | if (need_sense && !ap->ops->error_handler) |
41d4c60f | 1696 | ata_dump_status(ap, &qc->result_tf); |
1da177e4 | 1697 | |
2aa8f5d6 | 1698 | ata_qc_done(qc); |
1da177e4 LT |
1699 | } |
1700 | ||
1701 | /** | |
1702 | * ata_scsi_translate - Translate then issue SCSI command to ATA device | |
1da177e4 LT |
1703 | * @dev: ATA device to which the command is addressed |
1704 | * @cmd: SCSI command to execute | |
1da177e4 LT |
1705 | * @xlat_func: Actor which translates @cmd to an ATA taskfile |
1706 | * | |
1707 | * Our ->queuecommand() function has decided that the SCSI | |
1708 | * command issued can be directly translated into an ATA | |
1709 | * command, rather than handled internally. | |
1710 | * | |
1711 | * This function sets up an ata_queued_cmd structure for the | |
1712 | * SCSI command, and sends that ata_queued_cmd to the hardware. | |
1713 | * | |
ae006510 DG |
1714 | * The xlat_func argument (actor) returns 0 if ready to execute |
1715 | * ATA command, else 1 to finish translation. If 1 is returned | |
1716 | * then cmd->result (and possibly cmd->sense_buffer) are assumed | |
1717 | * to be set reflecting an error condition or clean (early) | |
1718 | * termination. | |
1719 | * | |
1da177e4 | 1720 | * LOCKING: |
cca3974e | 1721 | * spin_lock_irqsave(host lock) |
2115ea94 TH |
1722 | * |
1723 | * RETURNS: | |
1724 | * 0 on success, SCSI_ML_QUEUE_DEVICE_BUSY if the command | |
1725 | * needs to be deferred. | |
1da177e4 | 1726 | */ |
2115ea94 | 1727 | static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd, |
2115ea94 | 1728 | ata_xlat_func_t xlat_func) |
1da177e4 | 1729 | { |
31cc23b3 | 1730 | struct ata_port *ap = dev->link->ap; |
1da177e4 | 1731 | struct ata_queued_cmd *qc; |
31cc23b3 | 1732 | int rc; |
1da177e4 | 1733 | |
b27dcfb0 | 1734 | qc = ata_scsi_qc_new(dev, cmd); |
1da177e4 | 1735 | if (!qc) |
ae006510 | 1736 | goto err_mem; |
1da177e4 LT |
1737 | |
1738 | /* data is present; dma-map it */ | |
be7db055 | 1739 | if (cmd->sc_data_direction == DMA_FROM_DEVICE || |
1740 | cmd->sc_data_direction == DMA_TO_DEVICE) { | |
7120165c | 1741 | if (unlikely(scsi_bufflen(cmd) < 1)) { |
a9a79dfe | 1742 | ata_dev_warn(dev, "WARNING: zero len r/w req\n"); |
ae006510 | 1743 | goto err_did; |
1da177e4 LT |
1744 | } |
1745 | ||
7120165c | 1746 | ata_sg_init(qc, scsi_sglist(cmd), scsi_sg_count(cmd)); |
1da177e4 LT |
1747 | |
1748 | qc->dma_dir = cmd->sc_data_direction; | |
1749 | } | |
1750 | ||
1751 | qc->complete_fn = ata_scsi_qc_complete; | |
1752 | ||
ad706991 | 1753 | if (xlat_func(qc)) |
ae006510 | 1754 | goto early_finish; |
1da177e4 | 1755 | |
31cc23b3 TH |
1756 | if (ap->ops->qc_defer) { |
1757 | if ((rc = ap->ops->qc_defer(qc))) | |
1758 | goto defer; | |
1759 | } | |
1760 | ||
1da177e4 | 1761 | /* select device, send command to hardware */ |
8e0e694a | 1762 | ata_qc_issue(qc); |
1da177e4 | 1763 | |
2115ea94 | 1764 | return 0; |
1da177e4 | 1765 | |
ae006510 | 1766 | early_finish: |
2dcb407e | 1767 | ata_qc_free(qc); |
58bf201d | 1768 | scsi_done(cmd); |
2115ea94 | 1769 | return 0; |
ae006510 DG |
1770 | |
1771 | err_did: | |
1da177e4 | 1772 | ata_qc_free(qc); |
ae006510 | 1773 | cmd->result = (DID_ERROR << 16); |
58bf201d | 1774 | scsi_done(cmd); |
253b92ec | 1775 | err_mem: |
2115ea94 | 1776 | return 0; |
3dc1d881 TH |
1777 | |
1778 | defer: | |
31cc23b3 | 1779 | ata_qc_free(qc); |
31cc23b3 TH |
1780 | if (rc == ATA_DEFER_LINK) |
1781 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
1782 | else | |
1783 | return SCSI_MLQUEUE_HOST_BUSY; | |
1da177e4 LT |
1784 | } |
1785 | ||
f0a37d12 CH |
1786 | struct ata_scsi_args { |
1787 | struct ata_device *dev; | |
1788 | u16 *id; | |
1789 | struct scsi_cmnd *cmd; | |
f0a37d12 CH |
1790 | }; |
1791 | ||
1da177e4 LT |
1792 | /** |
1793 | * ata_scsi_rbuf_fill - wrapper for SCSI command simulators | |
1794 | * @args: device IDENTIFY data / SCSI command of interest. | |
1795 | * @actor: Callback hook for desired SCSI command simulator | |
1796 | * | |
1797 | * Takes care of the hard work of simulating a SCSI command... | |
1798 | * Mapping the response buffer, calling the command's handler, | |
1799 | * and handling the handler's return value. This return value | |
1800 | * indicates whether the handler wishes the SCSI command to be | |
ae006510 DG |
1801 | * completed successfully (0), or not (in which case cmd->result |
1802 | * and sense buffer are assumed to be set). | |
1da177e4 LT |
1803 | * |
1804 | * LOCKING: | |
cca3974e | 1805 | * spin_lock_irqsave(host lock) |
1da177e4 | 1806 | */ |
f0761be3 | 1807 | static void ata_scsi_rbuf_fill(struct ata_scsi_args *args, |
87340e98 | 1808 | unsigned int (*actor)(struct ata_scsi_args *args, u8 *rbuf)) |
1da177e4 | 1809 | { |
87340e98 | 1810 | unsigned int rc; |
1da177e4 | 1811 | struct scsi_cmnd *cmd = args->cmd; |
b445c568 JG |
1812 | unsigned long flags; |
1813 | ||
56b4f06c DLM |
1814 | spin_lock_irqsave(&ata_scsi_rbuf_lock, flags); |
1815 | ||
1816 | memset(ata_scsi_rbuf, 0, ATA_SCSI_RBUF_SIZE); | |
1817 | rc = actor(args, ata_scsi_rbuf); | |
1818 | if (rc == 0) | |
1819 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), | |
1820 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); | |
1821 | ||
1822 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, flags); | |
b445c568 | 1823 | |
ae006510 | 1824 | if (rc == 0) |
1da177e4 | 1825 | cmd->result = SAM_STAT_GOOD; |
1da177e4 LT |
1826 | } |
1827 | ||
1828 | /** | |
1829 | * ata_scsiop_inq_std - Simulate INQUIRY command | |
1830 | * @args: device IDENTIFY data / SCSI command of interest. | |
1831 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
1832 | * |
1833 | * Returns standard device identification data associated | |
b142eb65 | 1834 | * with non-VPD INQUIRY command output. |
1da177e4 LT |
1835 | * |
1836 | * LOCKING: | |
cca3974e | 1837 | * spin_lock_irqsave(host lock) |
1da177e4 | 1838 | */ |
87340e98 | 1839 | static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 1840 | { |
e94f7914 | 1841 | static const u8 versions[] = { |
f9ca5ab8 | 1842 | 0x00, |
87340e98 TH |
1843 | 0x60, /* SAM-3 (no version claimed) */ |
1844 | ||
1845 | 0x03, | |
1846 | 0x20, /* SBC-2 (no version claimed) */ | |
1847 | ||
29a37ea4 TY |
1848 | 0x03, |
1849 | 0x00 /* SPC-3 (no version claimed) */ | |
87340e98 | 1850 | }; |
e94f7914 | 1851 | static const u8 versions_zbc[] = { |
f9ca5ab8 HR |
1852 | 0x00, |
1853 | 0xA0, /* SAM-5 (no version claimed) */ | |
1854 | ||
856c4663 HR |
1855 | 0x06, |
1856 | 0x00, /* SBC-4 (no version claimed) */ | |
f9ca5ab8 | 1857 | |
856c4663 HR |
1858 | 0x05, |
1859 | 0xC0, /* SPC-5 (no version claimed) */ | |
f9ca5ab8 HR |
1860 | |
1861 | 0x60, | |
856c4663 | 1862 | 0x24, /* ZBC r05 */ |
f9ca5ab8 HR |
1863 | }; |
1864 | ||
1da177e4 LT |
1865 | u8 hdr[] = { |
1866 | TYPE_DISK, | |
1867 | 0, | |
1868 | 0x5, /* claim SPC-3 version compatibility */ | |
1869 | 2, | |
415ffdde TY |
1870 | 95 - 4, |
1871 | 0, | |
1872 | 0, | |
1873 | 2 | |
1da177e4 LT |
1874 | }; |
1875 | ||
8a3e33cf ML |
1876 | /* set scsi removable (RMB) bit per ata bit, or if the |
1877 | * AHCI port says it's external (Hotplug-capable, eSATA). | |
1878 | */ | |
1879 | if (ata_id_removable(args->id) || | |
1880 | (args->dev->link->ap->pflags & ATA_PFLAG_EXTERNAL)) | |
1da177e4 LT |
1881 | hdr[1] |= (1 << 7); |
1882 | ||
56b8cbab | 1883 | if (args->dev->class == ATA_DEV_ZAC) { |
f9ca5ab8 | 1884 | hdr[0] = TYPE_ZBC; |
56b8cbab TY |
1885 | hdr[2] = 0x7; /* claim SPC-5 version compatibility */ |
1886 | } | |
f9ca5ab8 | 1887 | |
1da177e4 | 1888 | memcpy(rbuf, hdr, sizeof(hdr)); |
87340e98 TH |
1889 | memcpy(&rbuf[8], "ATA ", 8); |
1890 | ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16); | |
c49a6bf5 KB |
1891 | |
1892 | /* From SAT, use last 2 words from fw rev unless they are spaces */ | |
1893 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV + 2, 4); | |
1894 | if (strncmp(&rbuf[32], " ", 4) == 0) | |
1895 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4); | |
1da177e4 | 1896 | |
87340e98 TH |
1897 | if (rbuf[32] == 0 || rbuf[32] == ' ') |
1898 | memcpy(&rbuf[32], "n/a ", 4); | |
1da177e4 | 1899 | |
856c4663 | 1900 | if (ata_id_zoned_cap(args->id) || args->dev->class == ATA_DEV_ZAC) |
f9ca5ab8 HR |
1901 | memcpy(rbuf + 58, versions_zbc, sizeof(versions_zbc)); |
1902 | else | |
1903 | memcpy(rbuf + 58, versions, sizeof(versions)); | |
1da177e4 LT |
1904 | |
1905 | return 0; | |
1906 | } | |
1907 | ||
1908 | /** | |
b142eb65 | 1909 | * ata_scsiop_inq_00 - Simulate INQUIRY VPD page 0, list of pages |
1da177e4 LT |
1910 | * @args: device IDENTIFY data / SCSI command of interest. |
1911 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 1912 | * |
b142eb65 | 1913 | * Returns list of inquiry VPD pages available. |
1da177e4 LT |
1914 | * |
1915 | * LOCKING: | |
cca3974e | 1916 | * spin_lock_irqsave(host lock) |
1da177e4 | 1917 | */ |
87340e98 | 1918 | static unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 1919 | { |
fe22e1c2 | 1920 | int i, num_pages = 0; |
e94f7914 | 1921 | static const u8 pages[] = { |
1da177e4 LT |
1922 | 0x00, /* page 0x00, this page */ |
1923 | 0x80, /* page 0x80, unit serial no page */ | |
1e9dbc92 MW |
1924 | 0x83, /* page 0x83, device ident page */ |
1925 | 0x89, /* page 0x89, ata info page */ | |
18f0f978 | 1926 | 0xb0, /* page 0xb0, block limits page */ |
1e9dbc92 | 1927 | 0xb1, /* page 0xb1, block device characteristics page */ |
02e0a604 | 1928 | 0xb2, /* page 0xb2, thin provisioning page */ |
6d1003ae | 1929 | 0xb6, /* page 0xb6, zoned block device characteristics */ |
fe22e1c2 | 1930 | 0xb9, /* page 0xb9, concurrent positioning ranges */ |
1da177e4 | 1931 | }; |
1da177e4 | 1932 | |
fe22e1c2 DLM |
1933 | for (i = 0; i < sizeof(pages); i++) { |
1934 | if (pages[i] == 0xb6 && | |
1935 | !(args->dev->flags & ATA_DFLAG_ZAC)) | |
1936 | continue; | |
1937 | rbuf[num_pages + 4] = pages[i]; | |
1938 | num_pages++; | |
1939 | } | |
6d1003ae | 1940 | rbuf[3] = num_pages; /* number of supported VPD pages */ |
1da177e4 LT |
1941 | return 0; |
1942 | } | |
1943 | ||
1944 | /** | |
b142eb65 | 1945 | * ata_scsiop_inq_80 - Simulate INQUIRY VPD page 80, device serial number |
1da177e4 LT |
1946 | * @args: device IDENTIFY data / SCSI command of interest. |
1947 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
1948 | * |
1949 | * Returns ATA device serial number. | |
1950 | * | |
1951 | * LOCKING: | |
cca3974e | 1952 | * spin_lock_irqsave(host lock) |
1da177e4 | 1953 | */ |
87340e98 | 1954 | static unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 1955 | { |
e94f7914 | 1956 | static const u8 hdr[] = { |
1da177e4 LT |
1957 | 0, |
1958 | 0x80, /* this page code */ | |
1959 | 0, | |
a0cf733b | 1960 | ATA_ID_SERNO_LEN, /* page len */ |
1da177e4 | 1961 | }; |
1da177e4 | 1962 | |
87340e98 TH |
1963 | memcpy(rbuf, hdr, sizeof(hdr)); |
1964 | ata_id_string(args->id, (unsigned char *) &rbuf[4], | |
1965 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
1da177e4 LT |
1966 | return 0; |
1967 | } | |
1968 | ||
1da177e4 | 1969 | /** |
b142eb65 | 1970 | * ata_scsiop_inq_83 - Simulate INQUIRY VPD page 83, device identity |
1da177e4 LT |
1971 | * @args: device IDENTIFY data / SCSI command of interest. |
1972 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 1973 | * |
b142eb65 JG |
1974 | * Yields two logical unit device identification designators: |
1975 | * - vendor specific ASCII containing the ATA serial number | |
1976 | * - SAT defined "t10 vendor id based" containing ASCII vendor | |
1977 | * name ("ATA "), model and serial numbers. | |
1da177e4 LT |
1978 | * |
1979 | * LOCKING: | |
cca3974e | 1980 | * spin_lock_irqsave(host lock) |
1da177e4 | 1981 | */ |
87340e98 | 1982 | static unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 1983 | { |
b142eb65 | 1984 | const int sat_model_serial_desc_len = 68; |
87340e98 | 1985 | int num; |
1da177e4 | 1986 | |
b142eb65 JG |
1987 | rbuf[1] = 0x83; /* this page code */ |
1988 | num = 4; | |
1989 | ||
87340e98 TH |
1990 | /* piv=0, assoc=lu, code_set=ACSII, designator=vendor */ |
1991 | rbuf[num + 0] = 2; | |
1992 | rbuf[num + 3] = ATA_ID_SERNO_LEN; | |
1993 | num += 4; | |
1994 | ata_id_string(args->id, (unsigned char *) rbuf + num, | |
1995 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
1996 | num += ATA_ID_SERNO_LEN; | |
1997 | ||
1998 | /* SAT defined lu model and serial numbers descriptor */ | |
1999 | /* piv=0, assoc=lu, code_set=ACSII, designator=t10 vendor id */ | |
2000 | rbuf[num + 0] = 2; | |
2001 | rbuf[num + 1] = 1; | |
2002 | rbuf[num + 3] = sat_model_serial_desc_len; | |
2003 | num += 4; | |
2004 | memcpy(rbuf + num, "ATA ", 8); | |
2005 | num += 8; | |
2006 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_PROD, | |
2007 | ATA_ID_PROD_LEN); | |
2008 | num += ATA_ID_PROD_LEN; | |
2009 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_SERNO, | |
2010 | ATA_ID_SERNO_LEN); | |
2011 | num += ATA_ID_SERNO_LEN; | |
2012 | ||
6b3b9d73 HR |
2013 | if (ata_id_has_wwn(args->id)) { |
2014 | /* SAT defined lu world wide name */ | |
2015 | /* piv=0, assoc=lu, code_set=binary, designator=NAA */ | |
2016 | rbuf[num + 0] = 1; | |
2017 | rbuf[num + 1] = 3; | |
2018 | rbuf[num + 3] = ATA_ID_WWN_LEN; | |
2019 | num += 4; | |
2020 | ata_id_string(args->id, (unsigned char *) rbuf + num, | |
2021 | ATA_ID_WWN, ATA_ID_WWN_LEN); | |
2022 | num += ATA_ID_WWN_LEN; | |
2023 | } | |
b142eb65 | 2024 | rbuf[3] = num - 4; /* page len (assume less than 256 bytes) */ |
1da177e4 LT |
2025 | return 0; |
2026 | } | |
2027 | ||
ad355b46 JG |
2028 | /** |
2029 | * ata_scsiop_inq_89 - Simulate INQUIRY VPD page 89, ATA info | |
2030 | * @args: device IDENTIFY data / SCSI command of interest. | |
2031 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
ad355b46 JG |
2032 | * |
2033 | * Yields SAT-specified ATA VPD page. | |
2034 | * | |
2035 | * LOCKING: | |
2036 | * spin_lock_irqsave(host lock) | |
2037 | */ | |
87340e98 | 2038 | static unsigned int ata_scsiop_inq_89(struct ata_scsi_args *args, u8 *rbuf) |
ad355b46 | 2039 | { |
87340e98 TH |
2040 | rbuf[1] = 0x89; /* our page code */ |
2041 | rbuf[2] = (0x238 >> 8); /* page size fixed at 238h */ | |
2042 | rbuf[3] = (0x238 & 0xff); | |
ad355b46 | 2043 | |
87340e98 TH |
2044 | memcpy(&rbuf[8], "linux ", 8); |
2045 | memcpy(&rbuf[16], "libata ", 16); | |
2046 | memcpy(&rbuf[32], DRV_VERSION, 4); | |
ad355b46 | 2047 | |
87340e98 | 2048 | rbuf[36] = 0x34; /* force D2H Reg FIS (34h) */ |
33531001 BZ |
2049 | rbuf[37] = (1 << 7); /* bit 7 indicates Command FIS */ |
2050 | /* TODO: PMP? */ | |
2051 | ||
2052 | /* we don't store the ATA device signature, so we fake it */ | |
2053 | rbuf[38] = ATA_DRDY; /* really, this is Status reg */ | |
2054 | rbuf[40] = 0x1; | |
2055 | rbuf[48] = 0x1; | |
ad355b46 | 2056 | |
87340e98 | 2057 | rbuf[56] = ATA_CMD_ID_ATA; |
ad355b46 | 2058 | |
87340e98 | 2059 | memcpy(&rbuf[60], &args->id[0], 512); |
ad355b46 JG |
2060 | return 0; |
2061 | } | |
2062 | ||
18f0f978 CH |
2063 | static unsigned int ata_scsiop_inq_b0(struct ata_scsi_args *args, u8 *rbuf) |
2064 | { | |
3b545563 | 2065 | struct ata_device *dev = args->dev; |
295124dc | 2066 | u16 min_io_sectors; |
18f0f978 CH |
2067 | |
2068 | rbuf[1] = 0xb0; | |
2069 | rbuf[3] = 0x3c; /* required VPD size with unmap support */ | |
2070 | ||
2071 | /* | |
2072 | * Optimal transfer length granularity. | |
2073 | * | |
2074 | * This is always one physical block, but for disks with a smaller | |
2075 | * logical than physical sector size we need to figure out what the | |
2076 | * latter is. | |
2077 | */ | |
295124dc | 2078 | min_io_sectors = 1 << ata_id_log2_per_physical_sector(args->id); |
18f0f978 CH |
2079 | put_unaligned_be16(min_io_sectors, &rbuf[6]); |
2080 | ||
2081 | /* | |
2082 | * Optimal unmap granularity. | |
2083 | * | |
2084 | * The ATA spec doesn't even know about a granularity or alignment | |
2085 | * for the TRIM command. We can leave away most of the unmap related | |
2086 | * VPD page entries, but we have specifify a granularity to signal | |
2087 | * that we support some form of unmap - in thise case via WRITE SAME | |
2088 | * with the unmap bit set. | |
2089 | */ | |
e78db4df | 2090 | if (ata_id_has_trim(args->id)) { |
3b545563 TH |
2091 | u64 max_blocks = 65535 * ATA_MAX_TRIM_RNUM; |
2092 | ||
2093 | if (dev->horkage & ATA_HORKAGE_MAX_TRIM_128M) | |
2094 | max_blocks = 128 << (20 - SECTOR_SHIFT); | |
2095 | ||
2096 | put_unaligned_be64(max_blocks, &rbuf[36]); | |
18f0f978 | 2097 | put_unaligned_be32(1, &rbuf[28]); |
e78db4df | 2098 | } |
18f0f978 CH |
2099 | |
2100 | return 0; | |
2101 | } | |
2102 | ||
1e9dbc92 MW |
2103 | static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf) |
2104 | { | |
4bca3286 MP |
2105 | int form_factor = ata_id_form_factor(args->id); |
2106 | int media_rotation_rate = ata_id_rotation_rate(args->id); | |
856c4663 | 2107 | u8 zoned = ata_id_zoned_cap(args->id); |
4bca3286 | 2108 | |
1e9dbc92 MW |
2109 | rbuf[1] = 0xb1; |
2110 | rbuf[3] = 0x3c; | |
4bca3286 MP |
2111 | rbuf[4] = media_rotation_rate >> 8; |
2112 | rbuf[5] = media_rotation_rate; | |
2113 | rbuf[7] = form_factor; | |
856c4663 HR |
2114 | if (zoned) |
2115 | rbuf[8] = (zoned << 4); | |
1e9dbc92 MW |
2116 | |
2117 | return 0; | |
2118 | } | |
2119 | ||
02e0a604 MP |
2120 | static unsigned int ata_scsiop_inq_b2(struct ata_scsi_args *args, u8 *rbuf) |
2121 | { | |
2122 | /* SCSI Thin Provisioning VPD page: SBC-3 rev 22 or later */ | |
2123 | rbuf[1] = 0xb2; | |
2124 | rbuf[3] = 0x4; | |
2125 | rbuf[5] = 1 << 6; /* TPWS */ | |
2126 | ||
2127 | return 0; | |
2128 | } | |
2129 | ||
6d1003ae HR |
2130 | static unsigned int ata_scsiop_inq_b6(struct ata_scsi_args *args, u8 *rbuf) |
2131 | { | |
2132 | /* | |
2133 | * zbc-r05 SCSI Zoned Block device characteristics VPD page | |
2134 | */ | |
2135 | rbuf[1] = 0xb6; | |
2136 | rbuf[3] = 0x3C; | |
2137 | ||
2138 | /* | |
2139 | * URSWRZ bit is only meaningful for host-managed ZAC drives | |
2140 | */ | |
2141 | if (args->dev->zac_zoned_cap & 1) | |
2142 | rbuf[4] |= 1; | |
2143 | put_unaligned_be32(args->dev->zac_zones_optimal_open, &rbuf[8]); | |
2144 | put_unaligned_be32(args->dev->zac_zones_optimal_nonseq, &rbuf[12]); | |
2145 | put_unaligned_be32(args->dev->zac_zones_max_open, &rbuf[16]); | |
2146 | ||
2147 | return 0; | |
2148 | } | |
2149 | ||
fe22e1c2 DLM |
2150 | static unsigned int ata_scsiop_inq_b9(struct ata_scsi_args *args, u8 *rbuf) |
2151 | { | |
2152 | struct ata_cpr_log *cpr_log = args->dev->cpr_log; | |
2153 | u8 *desc = &rbuf[64]; | |
2154 | int i; | |
2155 | ||
2156 | /* SCSI Concurrent Positioning Ranges VPD page: SBC-5 rev 1 or later */ | |
2157 | rbuf[1] = 0xb9; | |
6d11acd4 | 2158 | put_unaligned_be16(64 + (int)cpr_log->nr_cpr * 32 - 4, &rbuf[2]); |
fe22e1c2 DLM |
2159 | |
2160 | for (i = 0; i < cpr_log->nr_cpr; i++, desc += 32) { | |
2161 | desc[0] = cpr_log->cpr[i].num; | |
2162 | desc[1] = cpr_log->cpr[i].num_storage_elements; | |
2163 | put_unaligned_be64(cpr_log->cpr[i].start_lba, &desc[8]); | |
2164 | put_unaligned_be64(cpr_log->cpr[i].num_lbas, &desc[16]); | |
2165 | } | |
2166 | ||
2167 | return 0; | |
2168 | } | |
2169 | ||
6ca8e794 PB |
2170 | /** |
2171 | * modecpy - Prepare response for MODE SENSE | |
2172 | * @dest: output buffer | |
2173 | * @src: data being copied | |
2174 | * @n: length of mode page | |
2175 | * @changeable: whether changeable parameters are requested | |
2176 | * | |
2177 | * Generate a generic MODE SENSE page for either current or changeable | |
2178 | * parameters. | |
2179 | * | |
2180 | * LOCKING: | |
2181 | * None. | |
2182 | */ | |
2183 | static void modecpy(u8 *dest, const u8 *src, int n, bool changeable) | |
2184 | { | |
2185 | if (changeable) { | |
2186 | memcpy(dest, src, 2); | |
2187 | memset(dest + 2, 0, n - 2); | |
2188 | } else { | |
2189 | memcpy(dest, src, n); | |
2190 | } | |
2191 | } | |
2192 | ||
1da177e4 LT |
2193 | /** |
2194 | * ata_msense_caching - Simulate MODE SENSE caching info page | |
2195 | * @id: device IDENTIFY data | |
87340e98 | 2196 | * @buf: output buffer |
6ca8e794 | 2197 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2198 | * |
2199 | * Generate a caching info page, which conditionally indicates | |
2200 | * write caching to the SCSI layer, depending on device | |
2201 | * capabilities. | |
2202 | * | |
2203 | * LOCKING: | |
2204 | * None. | |
2205 | */ | |
6ca8e794 | 2206 | static unsigned int ata_msense_caching(u16 *id, u8 *buf, bool changeable) |
1da177e4 | 2207 | { |
6ca8e794 | 2208 | modecpy(buf, def_cache_mpage, sizeof(def_cache_mpage), changeable); |
737bee93 TY |
2209 | if (changeable) { |
2210 | buf[2] |= (1 << 2); /* ata_mselect_caching() */ | |
2211 | } else { | |
2212 | buf[2] |= (ata_id_wcache_enabled(id) << 2); /* write cache enable */ | |
2213 | buf[12] |= (!ata_id_rahead_enabled(id) << 5); /* disable read ahead */ | |
2214 | } | |
87340e98 | 2215 | return sizeof(def_cache_mpage); |
1da177e4 LT |
2216 | } |
2217 | ||
673b2fe6 DLM |
2218 | /* |
2219 | * Simulate MODE SENSE control mode page, sub-page 0. | |
2220 | */ | |
2221 | static unsigned int ata_msense_control_spg0(struct ata_device *dev, u8 *buf, | |
2222 | bool changeable) | |
2223 | { | |
2224 | modecpy(buf, def_control_mpage, | |
2225 | sizeof(def_control_mpage), changeable); | |
2226 | if (changeable) { | |
2227 | /* ata_mselect_control() */ | |
2228 | buf[2] |= (1 << 2); | |
2229 | } else { | |
2230 | bool d_sense = (dev->flags & ATA_DFLAG_D_SENSE); | |
2231 | ||
2232 | /* descriptor format sense data */ | |
2233 | buf[2] |= (d_sense << 2); | |
2234 | } | |
2235 | ||
2236 | return sizeof(def_control_mpage); | |
2237 | } | |
2238 | ||
2239 | /* | |
2240 | * Translate an ATA duration limit in microseconds to a SCSI duration limit | |
2241 | * using the t2cdlunits 0xa (10ms). Since the SCSI duration limits are 2-bytes | |
2242 | * only, take care of overflows. | |
2243 | */ | |
2244 | static inline u16 ata_xlat_cdl_limit(u8 *buf) | |
2245 | { | |
2246 | u32 limit = get_unaligned_le32(buf); | |
2247 | ||
2248 | return min_t(u32, limit / 10000, 65535); | |
2249 | } | |
2250 | ||
2251 | /* | |
2252 | * Simulate MODE SENSE control mode page, sub-pages 07h and 08h | |
2253 | * (command duration limits T2A and T2B mode pages). | |
2254 | */ | |
2255 | static unsigned int ata_msense_control_spgt2(struct ata_device *dev, u8 *buf, | |
2256 | u8 spg) | |
2257 | { | |
2258 | u8 *b, *cdl = dev->cdl, *desc; | |
2259 | u32 policy; | |
2260 | int i; | |
2261 | ||
2262 | /* | |
2263 | * Fill the subpage. The first four bytes of the T2A/T2B mode pages | |
2264 | * are a header. The PAGE LENGTH field is the size of the page | |
2265 | * excluding the header. | |
2266 | */ | |
2267 | buf[0] = CONTROL_MPAGE; | |
2268 | buf[1] = spg; | |
2269 | put_unaligned_be16(CDL_T2_SUB_MPAGE_LEN - 4, &buf[2]); | |
2270 | if (spg == CDL_T2A_SUB_MPAGE) { | |
2271 | /* | |
2272 | * Read descriptors map to the T2A page: | |
2273 | * set perf_vs_duration_guidleine. | |
2274 | */ | |
2275 | buf[7] = (cdl[0] & 0x03) << 4; | |
2276 | desc = cdl + 64; | |
2277 | } else { | |
2278 | /* Write descriptors map to the T2B page */ | |
2279 | desc = cdl + 288; | |
2280 | } | |
2281 | ||
2282 | /* Fill the T2 page descriptors */ | |
2283 | b = &buf[8]; | |
2284 | policy = get_unaligned_le32(&cdl[0]); | |
2285 | for (i = 0; i < 7; i++, b += 32, desc += 32) { | |
2286 | /* t2cdlunits: fixed to 10ms */ | |
2287 | b[0] = 0x0a; | |
2288 | ||
2289 | /* Max inactive time and its policy */ | |
2290 | put_unaligned_be16(ata_xlat_cdl_limit(&desc[8]), &b[2]); | |
2291 | b[6] = ((policy >> 8) & 0x0f) << 4; | |
2292 | ||
2293 | /* Max active time and its policy */ | |
2294 | put_unaligned_be16(ata_xlat_cdl_limit(&desc[4]), &b[4]); | |
2295 | b[6] |= (policy >> 4) & 0x0f; | |
2296 | ||
2297 | /* Command duration guideline and its policy */ | |
2298 | put_unaligned_be16(ata_xlat_cdl_limit(&desc[16]), &b[10]); | |
2299 | b[14] = policy & 0x0f; | |
2300 | } | |
2301 | ||
2302 | return CDL_T2_SUB_MPAGE_LEN; | |
2303 | } | |
2304 | ||
df60f9c6 DLM |
2305 | /* |
2306 | * Simulate MODE SENSE control mode page, sub-page f2h | |
2307 | * (ATA feature control mode page). | |
2308 | */ | |
2309 | static unsigned int ata_msense_control_ata_feature(struct ata_device *dev, | |
2310 | u8 *buf) | |
2311 | { | |
2312 | /* PS=0, SPF=1 */ | |
2313 | buf[0] = CONTROL_MPAGE | (1 << 6); | |
2314 | buf[1] = ATA_FEATURE_SUB_MPAGE; | |
2315 | ||
2316 | /* | |
2317 | * The first four bytes of ATA Feature Control mode page are a header. | |
2318 | * The PAGE LENGTH field is the size of the page excluding the header. | |
2319 | */ | |
2320 | put_unaligned_be16(ATA_FEATURE_SUB_MPAGE_LEN - 4, &buf[2]); | |
2321 | ||
2322 | if (dev->flags & ATA_DFLAG_CDL) | |
2323 | buf[4] = 0x02; /* Support T2A and T2B pages */ | |
2324 | else | |
2325 | buf[4] = 0; | |
2326 | ||
2327 | return ATA_FEATURE_SUB_MPAGE_LEN; | |
2328 | } | |
2329 | ||
1da177e4 | 2330 | /** |
f086b748 | 2331 | * ata_msense_control - Simulate MODE SENSE control mode page |
06dbde5f | 2332 | * @dev: ATA device of interest |
87340e98 | 2333 | * @buf: output buffer |
673b2fe6 | 2334 | * @spg: sub-page code |
6ca8e794 | 2335 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2336 | * |
2337 | * Generate a generic MODE SENSE control mode page. | |
2338 | * | |
2339 | * LOCKING: | |
2340 | * None. | |
2341 | */ | |
f086b748 | 2342 | static unsigned int ata_msense_control(struct ata_device *dev, u8 *buf, |
673b2fe6 DLM |
2343 | u8 spg, bool changeable) |
2344 | { | |
2345 | unsigned int n; | |
2346 | ||
2347 | switch (spg) { | |
2348 | case 0: | |
2349 | return ata_msense_control_spg0(dev, buf, changeable); | |
2350 | case CDL_T2A_SUB_MPAGE: | |
2351 | case CDL_T2B_SUB_MPAGE: | |
2352 | return ata_msense_control_spgt2(dev, buf, spg); | |
df60f9c6 DLM |
2353 | case ATA_FEATURE_SUB_MPAGE: |
2354 | return ata_msense_control_ata_feature(dev, buf); | |
673b2fe6 DLM |
2355 | case ALL_SUB_MPAGES: |
2356 | n = ata_msense_control_spg0(dev, buf, changeable); | |
2357 | n += ata_msense_control_spgt2(dev, buf + n, CDL_T2A_SUB_MPAGE); | |
2358 | n += ata_msense_control_spgt2(dev, buf + n, CDL_T2A_SUB_MPAGE); | |
df60f9c6 | 2359 | n += ata_msense_control_ata_feature(dev, buf + n); |
673b2fe6 DLM |
2360 | return n; |
2361 | default: | |
2362 | return 0; | |
737bee93 | 2363 | } |
1da177e4 LT |
2364 | } |
2365 | ||
2366 | /** | |
2367 | * ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page | |
ec2a20e6 | 2368 | * @buf: output buffer |
6ca8e794 | 2369 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2370 | * |
2371 | * Generate a generic MODE SENSE r/w error recovery page. | |
2372 | * | |
2373 | * LOCKING: | |
2374 | * None. | |
2375 | */ | |
6ca8e794 | 2376 | static unsigned int ata_msense_rw_recovery(u8 *buf, bool changeable) |
1da177e4 | 2377 | { |
6ca8e794 PB |
2378 | modecpy(buf, def_rw_recovery_mpage, sizeof(def_rw_recovery_mpage), |
2379 | changeable); | |
00ac37f5 | 2380 | return sizeof(def_rw_recovery_mpage); |
1da177e4 LT |
2381 | } |
2382 | ||
2383 | /** | |
2384 | * ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands | |
2385 | * @args: device IDENTIFY data / SCSI command of interest. | |
2386 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 2387 | * |
00ac37f5 DG |
2388 | * Simulate MODE SENSE commands. Assume this is invoked for direct |
2389 | * access devices (e.g. disks) only. There should be no block | |
2390 | * descriptor for other device types. | |
1da177e4 LT |
2391 | * |
2392 | * LOCKING: | |
cca3974e | 2393 | * spin_lock_irqsave(host lock) |
1da177e4 | 2394 | */ |
87340e98 | 2395 | static unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2396 | { |
9a3dccc4 | 2397 | struct ata_device *dev = args->dev; |
87340e98 | 2398 | u8 *scsicmd = args->cmd->cmnd, *p = rbuf; |
e94f7914 | 2399 | static const u8 sat_blk_desc[] = { |
00ac37f5 DG |
2400 | 0, 0, 0, 0, /* number of blocks: sat unspecified */ |
2401 | 0, | |
2402 | 0, 0x2, 0x0 /* block length: 512 bytes */ | |
2403 | }; | |
2404 | u8 pg, spg; | |
87340e98 | 2405 | unsigned int ebd, page_control, six_byte; |
4d2e4980 | 2406 | u8 dpofua = 0, bp = 0xff; |
bcfc867d | 2407 | u16 fp; |
1da177e4 | 2408 | |
1da177e4 | 2409 | six_byte = (scsicmd[0] == MODE_SENSE); |
00ac37f5 DG |
2410 | ebd = !(scsicmd[1] & 0x8); /* dbd bit inverted == edb */ |
2411 | /* | |
2412 | * LLBA bit in msense(10) ignored (compliant) | |
1da177e4 | 2413 | */ |
00ac37f5 | 2414 | |
1da177e4 | 2415 | page_control = scsicmd[2] >> 6; |
ae006510 DG |
2416 | switch (page_control) { |
2417 | case 0: /* current */ | |
6ca8e794 PB |
2418 | case 1: /* changeable */ |
2419 | case 2: /* defaults */ | |
ae006510 DG |
2420 | break; /* supported */ |
2421 | case 3: /* saved */ | |
2422 | goto saving_not_supp; | |
ae006510 | 2423 | default: |
bcfc867d | 2424 | fp = 2; |
0df10b84 | 2425 | bp = 6; |
ae006510 DG |
2426 | goto invalid_fld; |
2427 | } | |
1da177e4 | 2428 | |
87340e98 TH |
2429 | if (six_byte) |
2430 | p += 4 + (ebd ? 8 : 0); | |
2431 | else | |
2432 | p += 8 + (ebd ? 8 : 0); | |
1da177e4 | 2433 | |
00ac37f5 DG |
2434 | pg = scsicmd[2] & 0x3f; |
2435 | spg = scsicmd[3]; | |
673b2fe6 | 2436 | |
00ac37f5 | 2437 | /* |
df60f9c6 | 2438 | * Supported subpages: all subpages and sub-pages 07h, 08h and f2h of |
673b2fe6 | 2439 | * the control page. |
00ac37f5 | 2440 | */ |
673b2fe6 DLM |
2441 | if (spg) { |
2442 | switch (spg) { | |
2443 | case ALL_SUB_MPAGES: | |
2444 | break; | |
2445 | case CDL_T2A_SUB_MPAGE: | |
2446 | case CDL_T2B_SUB_MPAGE: | |
df60f9c6 | 2447 | case ATA_FEATURE_SUB_MPAGE: |
673b2fe6 DLM |
2448 | if (dev->flags & ATA_DFLAG_CDL && pg == CONTROL_MPAGE) |
2449 | break; | |
2450 | fallthrough; | |
2451 | default: | |
2452 | fp = 3; | |
2453 | goto invalid_fld; | |
2454 | } | |
bcfc867d | 2455 | } |
00ac37f5 DG |
2456 | |
2457 | switch(pg) { | |
2458 | case RW_RECOVERY_MPAGE: | |
6ca8e794 | 2459 | p += ata_msense_rw_recovery(p, page_control == 1); |
1da177e4 LT |
2460 | break; |
2461 | ||
00ac37f5 | 2462 | case CACHE_MPAGE: |
6ca8e794 | 2463 | p += ata_msense_caching(args->id, p, page_control == 1); |
1da177e4 LT |
2464 | break; |
2465 | ||
87340e98 | 2466 | case CONTROL_MPAGE: |
673b2fe6 | 2467 | p += ata_msense_control(args->dev, p, spg, page_control == 1); |
1da177e4 | 2468 | break; |
1da177e4 | 2469 | |
00ac37f5 | 2470 | case ALL_MPAGES: |
6ca8e794 PB |
2471 | p += ata_msense_rw_recovery(p, page_control == 1); |
2472 | p += ata_msense_caching(args->id, p, page_control == 1); | |
673b2fe6 | 2473 | p += ata_msense_control(args->dev, p, spg, page_control == 1); |
1da177e4 LT |
2474 | break; |
2475 | ||
2476 | default: /* invalid page code */ | |
bcfc867d | 2477 | fp = 2; |
ae006510 | 2478 | goto invalid_fld; |
1da177e4 LT |
2479 | } |
2480 | ||
4d2e4980 | 2481 | if (dev->flags & ATA_DFLAG_FUA) |
9a3dccc4 TH |
2482 | dpofua = 1 << 4; |
2483 | ||
1da177e4 | 2484 | if (six_byte) { |
87340e98 TH |
2485 | rbuf[0] = p - rbuf - 1; |
2486 | rbuf[2] |= dpofua; | |
00ac37f5 | 2487 | if (ebd) { |
87340e98 TH |
2488 | rbuf[3] = sizeof(sat_blk_desc); |
2489 | memcpy(rbuf + 4, sat_blk_desc, sizeof(sat_blk_desc)); | |
00ac37f5 | 2490 | } |
1da177e4 | 2491 | } else { |
673b2fe6 | 2492 | put_unaligned_be16(p - rbuf - 2, &rbuf[0]); |
87340e98 | 2493 | rbuf[3] |= dpofua; |
00ac37f5 | 2494 | if (ebd) { |
87340e98 TH |
2495 | rbuf[7] = sizeof(sat_blk_desc); |
2496 | memcpy(rbuf + 8, sat_blk_desc, sizeof(sat_blk_desc)); | |
00ac37f5 | 2497 | } |
1da177e4 | 2498 | } |
1da177e4 | 2499 | return 0; |
ae006510 DG |
2500 | |
2501 | invalid_fld: | |
0df10b84 | 2502 | ata_scsi_set_invalid_field(dev, args->cmd, fp, bp); |
ae006510 DG |
2503 | return 1; |
2504 | ||
2505 | saving_not_supp: | |
06dbde5f | 2506 | ata_scsi_set_sense(dev, args->cmd, ILLEGAL_REQUEST, 0x39, 0x0); |
ae006510 DG |
2507 | /* "Saving parameters not supported" */ |
2508 | return 1; | |
1da177e4 LT |
2509 | } |
2510 | ||
2511 | /** | |
2512 | * ata_scsiop_read_cap - Simulate READ CAPACITY[ 16] commands | |
2513 | * @args: device IDENTIFY data / SCSI command of interest. | |
2514 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2515 | * |
2516 | * Simulate READ CAPACITY commands. | |
2517 | * | |
2518 | * LOCKING: | |
6a36261e | 2519 | * None. |
1da177e4 | 2520 | */ |
87340e98 | 2521 | static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2522 | { |
61d79a8e MP |
2523 | struct ata_device *dev = args->dev; |
2524 | u64 last_lba = dev->n_sectors - 1; /* LBA of the last block */ | |
295124dc GG |
2525 | u32 sector_size; /* physical sector size in bytes */ |
2526 | u8 log2_per_phys; | |
2527 | u16 lowest_aligned; | |
2528 | ||
2529 | sector_size = ata_id_logical_sector_size(dev->id); | |
2530 | log2_per_phys = ata_id_log2_per_physical_sector(dev->id); | |
2531 | lowest_aligned = ata_id_logical_sector_offset(dev->id, log2_per_phys); | |
1da177e4 | 2532 | |
1da177e4 | 2533 | if (args->cmd->cmnd[0] == READ_CAPACITY) { |
6a36261e TH |
2534 | if (last_lba >= 0xffffffffULL) |
2535 | last_lba = 0xffffffff; | |
0c144d0d | 2536 | |
1da177e4 | 2537 | /* sector count, 32-bit */ |
87340e98 TH |
2538 | rbuf[0] = last_lba >> (8 * 3); |
2539 | rbuf[1] = last_lba >> (8 * 2); | |
2540 | rbuf[2] = last_lba >> (8 * 1); | |
2541 | rbuf[3] = last_lba; | |
1da177e4 LT |
2542 | |
2543 | /* sector size */ | |
295124dc GG |
2544 | rbuf[4] = sector_size >> (8 * 3); |
2545 | rbuf[5] = sector_size >> (8 * 2); | |
2546 | rbuf[6] = sector_size >> (8 * 1); | |
2547 | rbuf[7] = sector_size; | |
1da177e4 LT |
2548 | } else { |
2549 | /* sector count, 64-bit */ | |
87340e98 TH |
2550 | rbuf[0] = last_lba >> (8 * 7); |
2551 | rbuf[1] = last_lba >> (8 * 6); | |
2552 | rbuf[2] = last_lba >> (8 * 5); | |
2553 | rbuf[3] = last_lba >> (8 * 4); | |
2554 | rbuf[4] = last_lba >> (8 * 3); | |
2555 | rbuf[5] = last_lba >> (8 * 2); | |
2556 | rbuf[6] = last_lba >> (8 * 1); | |
2557 | rbuf[7] = last_lba; | |
1da177e4 LT |
2558 | |
2559 | /* sector size */ | |
295124dc GG |
2560 | rbuf[ 8] = sector_size >> (8 * 3); |
2561 | rbuf[ 9] = sector_size >> (8 * 2); | |
2562 | rbuf[10] = sector_size >> (8 * 1); | |
2563 | rbuf[11] = sector_size; | |
61d79a8e MP |
2564 | |
2565 | rbuf[12] = 0; | |
295124dc | 2566 | rbuf[13] = log2_per_phys; |
61d79a8e MP |
2567 | rbuf[14] = (lowest_aligned >> 8) & 0x3f; |
2568 | rbuf[15] = lowest_aligned; | |
18f0f978 | 2569 | |
71d126fd AF |
2570 | if (ata_id_has_trim(args->id) && |
2571 | !(dev->horkage & ATA_HORKAGE_NOTRIM)) { | |
e61f7d1c | 2572 | rbuf[14] |= 0x80; /* LBPME */ |
e78db4df | 2573 | |
e61f7d1c MP |
2574 | if (ata_id_has_zero_after_trim(args->id) && |
2575 | dev->horkage & ATA_HORKAGE_ZERO_AFTER_TRIM) { | |
2576 | ata_dev_info(dev, "Enabling discard_zeroes_data\n"); | |
2577 | rbuf[14] |= 0x40; /* LBPRZ */ | |
2578 | } | |
e78db4df | 2579 | } |
6d1003ae HR |
2580 | if (ata_id_zoned_cap(args->id) || |
2581 | args->dev->class == ATA_DEV_ZAC) | |
2582 | rbuf[12] = (1 << 4); /* RC_BASIS */ | |
1da177e4 | 2583 | } |
1da177e4 LT |
2584 | return 0; |
2585 | } | |
2586 | ||
2587 | /** | |
2588 | * ata_scsiop_report_luns - Simulate REPORT LUNS command | |
2589 | * @args: device IDENTIFY data / SCSI command of interest. | |
2590 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2591 | * |
2592 | * Simulate REPORT LUNS command. | |
2593 | * | |
2594 | * LOCKING: | |
cca3974e | 2595 | * spin_lock_irqsave(host lock) |
1da177e4 | 2596 | */ |
87340e98 | 2597 | static unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2598 | { |
1da177e4 LT |
2599 | rbuf[3] = 8; /* just one lun, LUN 0, size 8 bytes */ |
2600 | ||
2601 | return 0; | |
2602 | } | |
2603 | ||
77853bf2 | 2604 | static void atapi_sense_complete(struct ata_queued_cmd *qc) |
a939c963 | 2605 | { |
74e6c8c3 | 2606 | if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) { |
c6e6e666 JG |
2607 | /* FIXME: not quite right; we don't want the |
2608 | * translation of taskfile registers into | |
2609 | * a sense descriptors, since that's only | |
2610 | * correct for ATA, not ATAPI | |
2611 | */ | |
750426aa | 2612 | ata_gen_passthru_sense(qc); |
74e6c8c3 | 2613 | } |
a939c963 | 2614 | |
2aa8f5d6 | 2615 | ata_qc_done(qc); |
c6e6e666 | 2616 | } |
a939c963 | 2617 | |
c6e6e666 JG |
2618 | /* is it pointless to prefer PIO for "safety reasons"? */ |
2619 | static inline int ata_pio_use_silly(struct ata_port *ap) | |
2620 | { | |
2621 | return (ap->flags & ATA_FLAG_PIO_DMA); | |
2622 | } | |
2623 | ||
2624 | static void atapi_request_sense(struct ata_queued_cmd *qc) | |
2625 | { | |
2626 | struct ata_port *ap = qc->ap; | |
2627 | struct scsi_cmnd *cmd = qc->scsicmd; | |
2628 | ||
7ccd720d | 2629 | memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); |
a939c963 | 2630 | |
127102ae | 2631 | #ifdef CONFIG_ATA_SFF |
855d854a JB |
2632 | if (ap->ops->sff_tf_read) |
2633 | ap->ops->sff_tf_read(ap, &qc->tf); | |
127102ae | 2634 | #endif |
c6e6e666 JG |
2635 | |
2636 | /* fill these in, for the case where they are -not- overwritten */ | |
2637 | cmd->sense_buffer[0] = 0x70; | |
efcef265 | 2638 | cmd->sense_buffer[2] = qc->tf.error >> 4; |
c6e6e666 JG |
2639 | |
2640 | ata_qc_reinit(qc); | |
2641 | ||
93f8fecb | 2642 | /* setup sg table and init transfer direction */ |
cadb7345 | 2643 | sg_init_one(&qc->sgent, cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); |
93f8fecb | 2644 | ata_sg_init(qc, &qc->sgent, 1); |
a939c963 JG |
2645 | qc->dma_dir = DMA_FROM_DEVICE; |
2646 | ||
6e7846e9 | 2647 | memset(&qc->cdb, 0, qc->dev->cdb_len); |
a939c963 JG |
2648 | qc->cdb[0] = REQUEST_SENSE; |
2649 | qc->cdb[4] = SCSI_SENSE_BUFFERSIZE; | |
2650 | ||
2651 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
2652 | qc->tf.command = ATA_CMD_PACKET; | |
2653 | ||
c6e6e666 | 2654 | if (ata_pio_use_silly(ap)) { |
0dc36888 | 2655 | qc->tf.protocol = ATAPI_PROT_DMA; |
c6e6e666 JG |
2656 | qc->tf.feature |= ATAPI_PKT_DMA; |
2657 | } else { | |
0dc36888 | 2658 | qc->tf.protocol = ATAPI_PROT_PIO; |
2db78dd3 AC |
2659 | qc->tf.lbam = SCSI_SENSE_BUFFERSIZE; |
2660 | qc->tf.lbah = 0; | |
c6e6e666 | 2661 | } |
a939c963 JG |
2662 | qc->nbytes = SCSI_SENSE_BUFFERSIZE; |
2663 | ||
c6e6e666 | 2664 | qc->complete_fn = atapi_sense_complete; |
a939c963 | 2665 | |
8e0e694a | 2666 | ata_qc_issue(qc); |
a939c963 JG |
2667 | } |
2668 | ||
aa18da8b CH |
2669 | /* |
2670 | * ATAPI devices typically report zero for their SCSI version, and sometimes | |
2671 | * deviate from the spec WRT response data format. If SCSI version is | |
2672 | * reported as zero like normal, then we make the following fixups: | |
2673 | * 1) Fake MMC-5 version, to indicate to the Linux scsi midlayer this is a | |
2674 | * modern device. | |
2675 | * 2) Ensure response data format / ATAPI information are always correct. | |
2676 | */ | |
2677 | static void atapi_fixup_inquiry(struct scsi_cmnd *cmd) | |
2678 | { | |
2679 | u8 buf[4]; | |
2680 | ||
2681 | sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, 4); | |
2682 | if (buf[2] == 0) { | |
2683 | buf[2] = 0x5; | |
2684 | buf[3] = 0x32; | |
2685 | } | |
2686 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, 4); | |
2687 | } | |
2688 | ||
77853bf2 | 2689 | static void atapi_qc_complete(struct ata_queued_cmd *qc) |
1da177e4 LT |
2690 | { |
2691 | struct scsi_cmnd *cmd = qc->scsicmd; | |
a22e2eb0 | 2692 | unsigned int err_mask = qc->err_mask; |
1da177e4 | 2693 | |
246619da TH |
2694 | /* handle completion from new EH */ |
2695 | if (unlikely(qc->ap->ops->error_handler && | |
2696 | (err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID))) { | |
2697 | ||
2698 | if (!(qc->flags & ATA_QCFLAG_SENSE_VALID)) { | |
2699 | /* FIXME: not quite right; we don't want the | |
2700 | * translation of taskfile registers into a | |
2701 | * sense descriptors, since that's only | |
2702 | * correct for ATA, not ATAPI | |
2703 | */ | |
750426aa | 2704 | ata_gen_passthru_sense(qc); |
246619da TH |
2705 | } |
2706 | ||
22aac089 TH |
2707 | /* SCSI EH automatically locks door if sdev->locked is |
2708 | * set. Sometimes door lock request continues to | |
2709 | * fail, for example, when no media is present. This | |
2710 | * creates a loop - SCSI EH issues door lock which | |
2711 | * fails and gets invoked again to acquire sense data | |
2712 | * for the failed command. | |
2713 | * | |
2714 | * If door lock fails, always clear sdev->locked to | |
2715 | * avoid this infinite loop. | |
2a5f07b5 TH |
2716 | * |
2717 | * This may happen before SCSI scan is complete. Make | |
2718 | * sure qc->dev->sdev isn't NULL before dereferencing. | |
22aac089 | 2719 | */ |
2a5f07b5 | 2720 | if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL && qc->dev->sdev) |
22aac089 TH |
2721 | qc->dev->sdev->locked = 0; |
2722 | ||
246619da | 2723 | qc->scsicmd->result = SAM_STAT_CHECK_CONDITION; |
2aa8f5d6 | 2724 | ata_qc_done(qc); |
246619da TH |
2725 | return; |
2726 | } | |
2727 | ||
2728 | /* successful completion or old EH failure path */ | |
a7dac447 | 2729 | if (unlikely(err_mask & AC_ERR_DEV)) { |
1da177e4 | 2730 | cmd->result = SAM_STAT_CHECK_CONDITION; |
c6e6e666 | 2731 | atapi_request_sense(qc); |
77853bf2 | 2732 | return; |
74e6c8c3 | 2733 | } else if (unlikely(err_mask)) { |
a7dac447 JG |
2734 | /* FIXME: not quite right; we don't want the |
2735 | * translation of taskfile registers into | |
2736 | * a sense descriptors, since that's only | |
2737 | * correct for ATA, not ATAPI | |
2738 | */ | |
750426aa | 2739 | ata_gen_passthru_sense(qc); |
74e6c8c3 | 2740 | } else { |
aa18da8b CH |
2741 | if (cmd->cmnd[0] == INQUIRY && (cmd->cmnd[1] & 0x03) == 0) |
2742 | atapi_fixup_inquiry(cmd); | |
1da177e4 LT |
2743 | cmd->result = SAM_STAT_GOOD; |
2744 | } | |
2745 | ||
2aa8f5d6 | 2746 | ata_qc_done(qc); |
1da177e4 LT |
2747 | } |
2748 | /** | |
2749 | * atapi_xlat - Initialize PACKET taskfile | |
2750 | * @qc: command structure to be initialized | |
1da177e4 LT |
2751 | * |
2752 | * LOCKING: | |
cca3974e | 2753 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
2754 | * |
2755 | * RETURNS: | |
2756 | * Zero on success, non-zero on failure. | |
2757 | */ | |
ad706991 | 2758 | static unsigned int atapi_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 2759 | { |
542b1444 | 2760 | struct scsi_cmnd *scmd = qc->scsicmd; |
1da177e4 | 2761 | struct ata_device *dev = qc->dev; |
542b1444 | 2762 | int nodata = (scmd->sc_data_direction == DMA_NONE); |
5895ef9a | 2763 | int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO); |
2db78dd3 | 2764 | unsigned int nbytes; |
1da177e4 | 2765 | |
2e5704f6 TH |
2766 | memset(qc->cdb, 0, dev->cdb_len); |
2767 | memcpy(qc->cdb, scmd->cmnd, scmd->cmd_len); | |
1da177e4 LT |
2768 | |
2769 | qc->complete_fn = atapi_qc_complete; | |
2770 | ||
2771 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
542b1444 | 2772 | if (scmd->sc_data_direction == DMA_TO_DEVICE) { |
1da177e4 | 2773 | qc->tf.flags |= ATA_TFLAG_WRITE; |
1da177e4 LT |
2774 | } |
2775 | ||
2776 | qc->tf.command = ATA_CMD_PACKET; | |
aacda375 | 2777 | ata_qc_set_pc_nbytes(qc); |
e00f1ff3 TH |
2778 | |
2779 | /* check whether ATAPI DMA is safe */ | |
5895ef9a | 2780 | if (!nodata && !using_pio && atapi_check_dma(qc)) |
e00f1ff3 | 2781 | using_pio = 1; |
1da177e4 | 2782 | |
e190222d TH |
2783 | /* Some controller variants snoop this value for Packet |
2784 | * transfers to do state machine and FIFO management. Thus we | |
2785 | * want to set it properly, and for DMA where it is | |
2786 | * effectively meaningless. | |
2787 | */ | |
aacda375 | 2788 | nbytes = min(ata_qc_raw_nbytes(qc), (unsigned int)63 * 1024); |
2db78dd3 | 2789 | |
e190222d TH |
2790 | /* Most ATAPI devices which honor transfer chunk size don't |
2791 | * behave according to the spec when odd chunk size which | |
2792 | * matches the transfer length is specified. If the number of | |
2793 | * bytes to transfer is 2n+1. According to the spec, what | |
2794 | * should happen is to indicate that 2n+1 is going to be | |
2795 | * transferred and transfer 2n+2 bytes where the last byte is | |
2796 | * padding. | |
2797 | * | |
2798 | * In practice, this doesn't happen. ATAPI devices first | |
2799 | * indicate and transfer 2n bytes and then indicate and | |
2800 | * transfer 2 bytes where the last byte is padding. | |
2801 | * | |
2802 | * This inconsistency confuses several controllers which | |
2803 | * perform PIO using DMA such as Intel AHCIs and sil3124/32. | |
2804 | * These controllers use actual number of transferred bytes to | |
8d1e02d1 | 2805 | * update DMA pointer and transfer of 4n+2 bytes make those |
e190222d TH |
2806 | * controller push DMA pointer by 4n+4 bytes because SATA data |
2807 | * FISes are aligned to 4 bytes. This causes data corruption | |
2808 | * and buffer overrun. | |
2809 | * | |
2810 | * Always setting nbytes to even number solves this problem | |
2811 | * because then ATAPI devices don't have to split data at 2n | |
2812 | * boundaries. | |
2813 | */ | |
2814 | if (nbytes & 0x1) | |
2815 | nbytes++; | |
2816 | ||
2db78dd3 AC |
2817 | qc->tf.lbam = (nbytes & 0xFF); |
2818 | qc->tf.lbah = (nbytes >> 8); | |
2819 | ||
5895ef9a TH |
2820 | if (nodata) |
2821 | qc->tf.protocol = ATAPI_PROT_NODATA; | |
2822 | else if (using_pio) | |
2823 | qc->tf.protocol = ATAPI_PROT_PIO; | |
2824 | else { | |
e00f1ff3 | 2825 | /* DMA data xfer */ |
0dc36888 | 2826 | qc->tf.protocol = ATAPI_PROT_DMA; |
1da177e4 LT |
2827 | qc->tf.feature |= ATAPI_PKT_DMA; |
2828 | ||
91163006 TH |
2829 | if ((dev->flags & ATA_DFLAG_DMADIR) && |
2830 | (scmd->sc_data_direction != DMA_TO_DEVICE)) | |
95de719a | 2831 | /* some SATA bridges need us to indicate data xfer direction */ |
1da177e4 | 2832 | qc->tf.feature |= ATAPI_DMADIR; |
1da177e4 LT |
2833 | } |
2834 | ||
2db78dd3 AC |
2835 | |
2836 | /* FIXME: We need to translate 0x05 READ_BLOCK_LIMITS to a MODE_SENSE | |
2837 | as ATAPI tape drives don't get this right otherwise */ | |
1da177e4 LT |
2838 | return 0; |
2839 | } | |
2840 | ||
7f875850 | 2841 | static struct ata_device *ata_find_dev(struct ata_port *ap, unsigned int devno) |
ab5b3a5b | 2842 | { |
7f875850 DLM |
2843 | /* |
2844 | * For the non-PMP case, ata_link_max_devices() returns 1 (SATA case), | |
2845 | * or 2 (IDE master + slave case). However, the former case includes | |
2846 | * libsas hosted devices which are numbered per scsi host, leading | |
2847 | * to devno potentially being larger than 0 but with each struct | |
2848 | * ata_device having its own struct ata_port and struct ata_link. | |
2849 | * To accommodate these, ignore devno and always use device number 0. | |
2850 | */ | |
2851 | if (likely(!sata_pmp_attached(ap))) { | |
2852 | int link_max_devices = ata_link_max_devices(&ap->link); | |
2853 | ||
2854 | if (link_max_devices == 1) | |
2855 | return &ap->link.device[0]; | |
2856 | ||
2857 | if (devno < link_max_devices) | |
41bda9c9 | 2858 | return &ap->link.device[devno]; |
7f875850 DLM |
2859 | |
2860 | return NULL; | |
41bda9c9 TH |
2861 | } |
2862 | ||
7f875850 DLM |
2863 | /* |
2864 | * For PMP-attached devices, the device number corresponds to C | |
2865 | * (channel) of SCSI [H:C:I:L], indicating the port pmp link | |
2866 | * for the device. | |
2867 | */ | |
2868 | if (devno < ap->nr_pmp_links) | |
2869 | return &ap->pmp_link[devno].device[0]; | |
2870 | ||
ab5b3a5b TH |
2871 | return NULL; |
2872 | } | |
2873 | ||
2dcb407e JG |
2874 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
2875 | const struct scsi_device *scsidev) | |
ab5b3a5b | 2876 | { |
41bda9c9 TH |
2877 | int devno; |
2878 | ||
ab5b3a5b | 2879 | /* skip commands not addressed to targets we simulate */ |
071f44b1 | 2880 | if (!sata_pmp_attached(ap)) { |
41bda9c9 TH |
2881 | if (unlikely(scsidev->channel || scsidev->lun)) |
2882 | return NULL; | |
2883 | devno = scsidev->id; | |
2884 | } else { | |
2885 | if (unlikely(scsidev->id || scsidev->lun)) | |
2886 | return NULL; | |
2887 | devno = scsidev->channel; | |
2888 | } | |
ab5b3a5b | 2889 | |
41bda9c9 | 2890 | return ata_find_dev(ap, devno); |
ab5b3a5b TH |
2891 | } |
2892 | ||
1da177e4 LT |
2893 | /** |
2894 | * ata_scsi_find_dev - lookup ata_device from scsi_cmnd | |
2895 | * @ap: ATA port to which the device is attached | |
2896 | * @scsidev: SCSI device from which we derive the ATA device | |
2897 | * | |
2898 | * Given various information provided in struct scsi_cmnd, | |
2899 | * map that onto an ATA bus, and using that mapping | |
2900 | * determine which ata_device is associated with the | |
2901 | * SCSI command to be sent. | |
2902 | * | |
2903 | * LOCKING: | |
cca3974e | 2904 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
2905 | * |
2906 | * RETURNS: | |
2907 | * Associated ATA device, or %NULL if not found. | |
2908 | */ | |
ec811a94 | 2909 | struct ata_device * |
057ace5e | 2910 | ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev) |
1da177e4 | 2911 | { |
ab5b3a5b | 2912 | struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev); |
1da177e4 | 2913 | |
2486fa56 | 2914 | if (unlikely(!dev || !ata_dev_enabled(dev))) |
1da177e4 LT |
2915 | return NULL; |
2916 | ||
1da177e4 LT |
2917 | return dev; |
2918 | } | |
2919 | ||
b095518e JG |
2920 | /* |
2921 | * ata_scsi_map_proto - Map pass-thru protocol value to taskfile value. | |
2922 | * @byte1: Byte 1 from pass-thru CDB. | |
2923 | * | |
2924 | * RETURNS: | |
2925 | * ATA_PROT_UNKNOWN if mapping failed/unimplemented, protocol otherwise. | |
2926 | */ | |
2927 | static u8 | |
2928 | ata_scsi_map_proto(u8 byte1) | |
2929 | { | |
2930 | switch((byte1 & 0x1e) >> 1) { | |
2dcb407e JG |
2931 | case 3: /* Non-data */ |
2932 | return ATA_PROT_NODATA; | |
2933 | ||
2934 | case 6: /* DMA */ | |
2935 | case 10: /* UDMA Data-in */ | |
2936 | case 11: /* UDMA Data-Out */ | |
2937 | return ATA_PROT_DMA; | |
2938 | ||
2939 | case 4: /* PIO Data-in */ | |
2940 | case 5: /* PIO Data-out */ | |
2941 | return ATA_PROT_PIO; | |
2942 | ||
ee7fb331 VK |
2943 | case 12: /* FPDMA */ |
2944 | return ATA_PROT_NCQ; | |
2945 | ||
2dcb407e JG |
2946 | case 0: /* Hard Reset */ |
2947 | case 1: /* SRST */ | |
2948 | case 8: /* Device Diagnostic */ | |
2949 | case 9: /* Device Reset */ | |
2950 | case 7: /* DMA Queued */ | |
2dcb407e JG |
2951 | case 15: /* Return Response Info */ |
2952 | default: /* Reserved */ | |
2953 | break; | |
b095518e JG |
2954 | } |
2955 | ||
2956 | return ATA_PROT_UNKNOWN; | |
2957 | } | |
2958 | ||
2959 | /** | |
2960 | * ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile | |
2961 | * @qc: command structure to be initialized | |
b095518e | 2962 | * |
b1ffbf85 | 2963 | * Handles either 12, 16, or 32-byte versions of the CDB. |
b095518e JG |
2964 | * |
2965 | * RETURNS: | |
2966 | * Zero on success, non-zero on failure. | |
2967 | */ | |
ad706991 | 2968 | static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc) |
b095518e JG |
2969 | { |
2970 | struct ata_taskfile *tf = &(qc->tf); | |
542b1444 | 2971 | struct scsi_cmnd *scmd = qc->scsicmd; |
f79d409f | 2972 | struct ata_device *dev = qc->dev; |
ad706991 | 2973 | const u8 *cdb = scmd->cmnd; |
bcfc867d | 2974 | u16 fp; |
b1ffbf85 | 2975 | u16 cdb_offset = 0; |
b095518e | 2976 | |
b1ffbf85 MI |
2977 | /* 7Fh variable length cmd means a ata pass-thru(32) */ |
2978 | if (cdb[0] == VARIABLE_LENGTH_CMD) | |
2979 | cdb_offset = 9; | |
2980 | ||
2981 | tf->protocol = ata_scsi_map_proto(cdb[1 + cdb_offset]); | |
2982 | if (tf->protocol == ATA_PROT_UNKNOWN) { | |
bcfc867d | 2983 | fp = 1; |
9a405257 | 2984 | goto invalid_fld; |
bcfc867d | 2985 | } |
8190bdb9 | 2986 | |
5da5231b GK |
2987 | if ((cdb[2 + cdb_offset] & 0x3) == 0) { |
2988 | /* | |
2989 | * When T_LENGTH is zero (No data is transferred), dir should | |
2990 | * be DMA_NONE. | |
2991 | */ | |
2992 | if (scmd->sc_data_direction != DMA_NONE) { | |
2993 | fp = 2 + cdb_offset; | |
2994 | goto invalid_fld; | |
2995 | } | |
2996 | ||
2997 | if (ata_is_ncq(tf->protocol)) | |
2998 | tf->protocol = ATA_PROT_NCQ_NODATA; | |
2999 | } | |
5b844b63 | 3000 | |
5f8e7f17 VK |
3001 | /* enable LBA */ |
3002 | tf->flags |= ATA_TFLAG_LBA; | |
3003 | ||
b095518e JG |
3004 | /* |
3005 | * 12 and 16 byte CDBs use different offsets to | |
3006 | * provide the various register values. | |
3007 | */ | |
59b00404 SS |
3008 | switch (cdb[0]) { |
3009 | case ATA_16: | |
b095518e JG |
3010 | /* |
3011 | * 16-byte CDB - may contain extended commands. | |
3012 | * | |
3013 | * If that is the case, copy the upper byte register values. | |
3014 | */ | |
542b1444 TH |
3015 | if (cdb[1] & 0x01) { |
3016 | tf->hob_feature = cdb[3]; | |
3017 | tf->hob_nsect = cdb[5]; | |
3018 | tf->hob_lbal = cdb[7]; | |
3019 | tf->hob_lbam = cdb[9]; | |
3020 | tf->hob_lbah = cdb[11]; | |
b095518e JG |
3021 | tf->flags |= ATA_TFLAG_LBA48; |
3022 | } else | |
3023 | tf->flags &= ~ATA_TFLAG_LBA48; | |
3024 | ||
3025 | /* | |
3026 | * Always copy low byte, device and command registers. | |
3027 | */ | |
542b1444 TH |
3028 | tf->feature = cdb[4]; |
3029 | tf->nsect = cdb[6]; | |
3030 | tf->lbal = cdb[8]; | |
3031 | tf->lbam = cdb[10]; | |
3032 | tf->lbah = cdb[12]; | |
3033 | tf->device = cdb[13]; | |
3034 | tf->command = cdb[14]; | |
59b00404 SS |
3035 | break; |
3036 | case ATA_12: | |
b095518e JG |
3037 | /* |
3038 | * 12-byte CDB - incapable of extended commands. | |
3039 | */ | |
3040 | tf->flags &= ~ATA_TFLAG_LBA48; | |
3041 | ||
542b1444 TH |
3042 | tf->feature = cdb[3]; |
3043 | tf->nsect = cdb[4]; | |
3044 | tf->lbal = cdb[5]; | |
3045 | tf->lbam = cdb[6]; | |
3046 | tf->lbah = cdb[7]; | |
3047 | tf->device = cdb[8]; | |
3048 | tf->command = cdb[9]; | |
59b00404 SS |
3049 | break; |
3050 | default: | |
b1ffbf85 MI |
3051 | /* |
3052 | * 32-byte CDB - may contain extended command fields. | |
3053 | * | |
3054 | * If that is the case, copy the upper byte register values. | |
3055 | */ | |
3056 | if (cdb[10] & 0x01) { | |
3057 | tf->hob_feature = cdb[20]; | |
3058 | tf->hob_nsect = cdb[22]; | |
3059 | tf->hob_lbal = cdb[16]; | |
3060 | tf->hob_lbam = cdb[15]; | |
3061 | tf->hob_lbah = cdb[14]; | |
3062 | tf->flags |= ATA_TFLAG_LBA48; | |
3063 | } else | |
3064 | tf->flags &= ~ATA_TFLAG_LBA48; | |
3065 | ||
3066 | tf->feature = cdb[21]; | |
3067 | tf->nsect = cdb[23]; | |
3068 | tf->lbal = cdb[19]; | |
3069 | tf->lbam = cdb[18]; | |
3070 | tf->lbah = cdb[17]; | |
3071 | tf->device = cdb[24]; | |
3072 | tf->command = cdb[25]; | |
3073 | tf->auxiliary = get_unaligned_be32(&cdb[28]); | |
59b00404 | 3074 | break; |
b095518e | 3075 | } |
fa4453c4 | 3076 | |
179b310a HR |
3077 | /* For NCQ commands copy the tag value */ |
3078 | if (ata_is_ncq(tf->protocol)) | |
4e5b6260 | 3079 | tf->nsect = qc->hw_tag << 3; |
ee7fb331 | 3080 | |
fa4453c4 AL |
3081 | /* enforce correct master/slave bit */ |
3082 | tf->device = dev->devno ? | |
3083 | tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1; | |
b095518e | 3084 | |
bd30add8 | 3085 | switch (tf->command) { |
295124dc | 3086 | /* READ/WRITE LONG use a non-standard sect_size */ |
bd30add8 TH |
3087 | case ATA_CMD_READ_LONG: |
3088 | case ATA_CMD_READ_LONG_ONCE: | |
3089 | case ATA_CMD_WRITE_LONG: | |
3090 | case ATA_CMD_WRITE_LONG_ONCE: | |
bcfc867d HR |
3091 | if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1) { |
3092 | fp = 1; | |
bd30add8 | 3093 | goto invalid_fld; |
bcfc867d | 3094 | } |
bd30add8 | 3095 | qc->sect_size = scsi_bufflen(scmd); |
295124dc GG |
3096 | break; |
3097 | ||
3098 | /* commands using reported Logical Block size (e.g. 512 or 4K) */ | |
3099 | case ATA_CMD_CFA_WRITE_NE: | |
3100 | case ATA_CMD_CFA_TRANS_SECT: | |
3101 | case ATA_CMD_CFA_WRITE_MULT_NE: | |
3102 | /* XXX: case ATA_CMD_CFA_WRITE_SECTORS_WITHOUT_ERASE: */ | |
3103 | case ATA_CMD_READ: | |
3104 | case ATA_CMD_READ_EXT: | |
3105 | case ATA_CMD_READ_QUEUED: | |
3106 | /* XXX: case ATA_CMD_READ_QUEUED_EXT: */ | |
3107 | case ATA_CMD_FPDMA_READ: | |
3108 | case ATA_CMD_READ_MULTI: | |
3109 | case ATA_CMD_READ_MULTI_EXT: | |
3110 | case ATA_CMD_PIO_READ: | |
3111 | case ATA_CMD_PIO_READ_EXT: | |
3112 | case ATA_CMD_READ_STREAM_DMA_EXT: | |
3113 | case ATA_CMD_READ_STREAM_EXT: | |
3114 | case ATA_CMD_VERIFY: | |
3115 | case ATA_CMD_VERIFY_EXT: | |
3116 | case ATA_CMD_WRITE: | |
3117 | case ATA_CMD_WRITE_EXT: | |
3118 | case ATA_CMD_WRITE_FUA_EXT: | |
3119 | case ATA_CMD_WRITE_QUEUED: | |
3120 | case ATA_CMD_WRITE_QUEUED_FUA_EXT: | |
3121 | case ATA_CMD_FPDMA_WRITE: | |
3122 | case ATA_CMD_WRITE_MULTI: | |
3123 | case ATA_CMD_WRITE_MULTI_EXT: | |
3124 | case ATA_CMD_WRITE_MULTI_FUA_EXT: | |
3125 | case ATA_CMD_PIO_WRITE: | |
3126 | case ATA_CMD_PIO_WRITE_EXT: | |
3127 | case ATA_CMD_WRITE_STREAM_DMA_EXT: | |
3128 | case ATA_CMD_WRITE_STREAM_EXT: | |
3129 | qc->sect_size = scmd->device->sector_size; | |
3130 | break; | |
3131 | ||
3132 | /* Everything else uses 512 byte "sectors" */ | |
3133 | default: | |
3134 | qc->sect_size = ATA_SECT_SIZE; | |
bd30add8 TH |
3135 | } |
3136 | ||
3137 | /* | |
3138 | * Set flags so that all registers will be written, pass on | |
3139 | * write indication (used for PIO/DMA setup), result TF is | |
3140 | * copied back and we don't whine too much about its failure. | |
3141 | */ | |
bc496ed0 | 3142 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
bd30add8 TH |
3143 | if (scmd->sc_data_direction == DMA_TO_DEVICE) |
3144 | tf->flags |= ATA_TFLAG_WRITE; | |
3145 | ||
3146 | qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET; | |
3147 | ||
3148 | /* | |
3149 | * Set transfer length. | |
3150 | * | |
3151 | * TODO: find out if we need to do more here to | |
3152 | * cover scatter/gather case. | |
3153 | */ | |
3154 | ata_qc_set_pc_nbytes(qc); | |
3155 | ||
3156 | /* We may not issue DMA commands if no DMA mode is set */ | |
6ac586f2 | 3157 | if (tf->protocol == ATA_PROT_DMA && !ata_dma_enabled(dev)) { |
bcfc867d | 3158 | fp = 1; |
bd30add8 | 3159 | goto invalid_fld; |
2c1ec6fd EB |
3160 | } |
3161 | ||
3162 | /* We may not issue NCQ commands to devices not supporting NCQ */ | |
3163 | if (ata_is_ncq(tf->protocol) && !ata_ncq_enabled(dev)) { | |
3164 | fp = 1; | |
3165 | goto invalid_fld; | |
bcfc867d | 3166 | } |
bd30add8 | 3167 | |
1dce589c | 3168 | /* sanity check for pio multi commands */ |
bcfc867d HR |
3169 | if ((cdb[1] & 0xe0) && !is_multi_taskfile(tf)) { |
3170 | fp = 1; | |
1dce589c | 3171 | goto invalid_fld; |
bcfc867d | 3172 | } |
1dce589c AL |
3173 | |
3174 | if (is_multi_taskfile(tf)) { | |
3175 | unsigned int multi_count = 1 << (cdb[1] >> 5); | |
3176 | ||
3177 | /* compare the passed through multi_count | |
3178 | * with the cached multi_count of libata | |
3179 | */ | |
3180 | if (multi_count != dev->multi_count) | |
a9a79dfe JP |
3181 | ata_dev_warn(dev, "invalid multi_count %u ignored\n", |
3182 | multi_count); | |
d26fc955 | 3183 | } |
1dce589c | 3184 | |
b095518e JG |
3185 | /* |
3186 | * Filter SET_FEATURES - XFER MODE command -- otherwise, | |
3187 | * SET_FEATURES - XFER MODE must be preceded/succeeded | |
3188 | * by an update to hardware-specific registers for each | |
3189 | * controller (i.e. the reason for ->set_piomode(), | |
3190 | * ->set_dmamode(), and ->post_set_mode() hooks). | |
3191 | */ | |
bd30add8 | 3192 | if (tf->command == ATA_CMD_SET_FEATURES && |
bcfc867d HR |
3193 | tf->feature == SETFEATURES_XFER) { |
3194 | fp = (cdb[0] == ATA_16) ? 4 : 3; | |
9a405257 | 3195 | goto invalid_fld; |
bcfc867d | 3196 | } |
b095518e JG |
3197 | |
3198 | /* | |
bd30add8 TH |
3199 | * Filter TPM commands by default. These provide an |
3200 | * essentially uncontrolled encrypted "back door" between | |
3201 | * applications and the disk. Set libata.allow_tpm=1 if you | |
3202 | * have a real reason for wanting to use them. This ensures | |
3203 | * that installed software cannot easily mess stuff up without | |
3204 | * user intent. DVR type users will probably ship with this enabled | |
3205 | * for movie content management. | |
b095518e | 3206 | * |
bd30add8 TH |
3207 | * Note that for ATA8 we can issue a DCS change and DCS freeze lock |
3208 | * for this and should do in future but that it is not sufficient as | |
3209 | * DCS is an optional feature set. Thus we also do the software filter | |
3210 | * so that we comply with the TC consortium stated goal that the user | |
3211 | * can turn off TC features of their system. | |
b095518e | 3212 | */ |
bcfc867d HR |
3213 | if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm) { |
3214 | fp = (cdb[0] == ATA_16) ? 14 : 9; | |
bd30add8 | 3215 | goto invalid_fld; |
bcfc867d | 3216 | } |
e61e0672 | 3217 | |
b095518e | 3218 | return 0; |
9a405257 TH |
3219 | |
3220 | invalid_fld: | |
0df10b84 | 3221 | ata_scsi_set_invalid_field(dev, scmd, fp, 0xff); |
9a405257 | 3222 | return 1; |
b095518e JG |
3223 | } |
3224 | ||
9379e6b8 ST |
3225 | /** |
3226 | * ata_format_dsm_trim_descr() - SATL Write Same to DSM Trim | |
3227 | * @cmd: SCSI command being translated | |
ef2d7392 | 3228 | * @trmax: Maximum number of entries that will fit in sector_size bytes. |
9379e6b8 | 3229 | * @sector: Starting sector |
7b203094 | 3230 | * @count: Total Range of request in logical sectors |
9379e6b8 ST |
3231 | * |
3232 | * Rewrite the WRITE SAME descriptor to be a DSM TRIM little-endian formatted | |
3233 | * descriptor. | |
3234 | * | |
3235 | * Upto 64 entries of the format: | |
3236 | * 63:48 Range Length | |
3237 | * 47:0 LBA | |
3238 | * | |
3239 | * Range Length of 0 is ignored. | |
3240 | * LBA's should be sorted order and not overlap. | |
3241 | * | |
3242 | * NOTE: this is the same format as ADD LBA(S) TO NV CACHE PINNED SET | |
ef2d7392 ST |
3243 | * |
3244 | * Return: Number of bytes copied into sglist. | |
9379e6b8 | 3245 | */ |
ef2d7392 ST |
3246 | static size_t ata_format_dsm_trim_descr(struct scsi_cmnd *cmd, u32 trmax, |
3247 | u64 sector, u32 count) | |
3248 | { | |
3249 | struct scsi_device *sdp = cmd->device; | |
3250 | size_t len = sdp->sector_size; | |
3251 | size_t r; | |
3252 | __le64 *buf; | |
3253 | u32 i = 0; | |
9379e6b8 ST |
3254 | unsigned long flags; |
3255 | ||
ef2d7392 ST |
3256 | WARN_ON(len > ATA_SCSI_RBUF_SIZE); |
3257 | ||
3258 | if (len > ATA_SCSI_RBUF_SIZE) | |
3259 | len = ATA_SCSI_RBUF_SIZE; | |
9379e6b8 ST |
3260 | |
3261 | spin_lock_irqsave(&ata_scsi_rbuf_lock, flags); | |
ef2d7392 ST |
3262 | buf = ((void *)ata_scsi_rbuf); |
3263 | memset(buf, 0, len); | |
3264 | while (i < trmax) { | |
9379e6b8 ST |
3265 | u64 entry = sector | |
3266 | ((u64)(count > 0xffff ? 0xffff : count) << 48); | |
ef2d7392 | 3267 | buf[i++] = __cpu_to_le64(entry); |
9379e6b8 ST |
3268 | if (count <= 0xffff) |
3269 | break; | |
3270 | count -= 0xffff; | |
3271 | sector += 0xffff; | |
3272 | } | |
ef2d7392 | 3273 | r = sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, len); |
9379e6b8 ST |
3274 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, flags); |
3275 | ||
ef2d7392 | 3276 | return r; |
9379e6b8 ST |
3277 | } |
3278 | ||
7b203094 ST |
3279 | /** |
3280 | * ata_scsi_write_same_xlat() - SATL Write Same to ATA SCT Write Same | |
3281 | * @qc: Command to be translated | |
3282 | * | |
3283 | * Translate a SCSI WRITE SAME command to be either a DSM TRIM command or | |
3284 | * an SCT Write Same command. | |
6baf20bc MCC |
3285 | * Based on WRITE SAME has the UNMAP flag: |
3286 | * | |
3287 | * - When set translate to DSM TRIM | |
3288 | * - When clear translate to SCT Write Same | |
7b203094 | 3289 | */ |
18f0f978 CH |
3290 | static unsigned int ata_scsi_write_same_xlat(struct ata_queued_cmd *qc) |
3291 | { | |
3292 | struct ata_taskfile *tf = &qc->tf; | |
3293 | struct scsi_cmnd *scmd = qc->scsicmd; | |
ef2d7392 ST |
3294 | struct scsi_device *sdp = scmd->device; |
3295 | size_t len = sdp->sector_size; | |
18f0f978 CH |
3296 | struct ata_device *dev = qc->dev; |
3297 | const u8 *cdb = scmd->cmnd; | |
3298 | u64 block; | |
3299 | u32 n_block; | |
ef2d7392 | 3300 | const u32 trmax = len >> 3; |
18f0f978 | 3301 | u32 size; |
bcfc867d | 3302 | u16 fp; |
0df10b84 | 3303 | u8 bp = 0xff; |
7b203094 | 3304 | u8 unmap = cdb[1] & 0x8; |
18f0f978 CH |
3305 | |
3306 | /* we may not issue DMA commands if no DMA mode is set */ | |
6ac586f2 | 3307 | if (unlikely(!ata_dma_enabled(dev))) |
bcfc867d | 3308 | goto invalid_opcode; |
18f0f978 | 3309 | |
c6ade20f CH |
3310 | /* |
3311 | * We only allow sending this command through the block layer, | |
3312 | * as it modifies the DATA OUT buffer, which would corrupt user | |
3313 | * memory for SG_IO commands. | |
3314 | */ | |
c8329cd5 | 3315 | if (unlikely(blk_rq_is_passthrough(scsi_cmd_to_rq(scmd)))) |
c6ade20f CH |
3316 | goto invalid_opcode; |
3317 | ||
bcfc867d HR |
3318 | if (unlikely(scmd->cmd_len < 16)) { |
3319 | fp = 15; | |
18f0f978 | 3320 | goto invalid_fld; |
bcfc867d | 3321 | } |
18f0f978 CH |
3322 | scsi_16_lba_len(cdb, &block, &n_block); |
3323 | ||
63ccc191 CH |
3324 | if (!unmap || |
3325 | (dev->horkage & ATA_HORKAGE_NOTRIM) || | |
3326 | !ata_id_has_trim(dev->id)) { | |
3327 | fp = 1; | |
3328 | bp = 3; | |
3329 | goto invalid_fld; | |
3330 | } | |
3331 | /* If the request is too large the cmd is invalid */ | |
3332 | if (n_block > 0xffff * trmax) { | |
3333 | fp = 2; | |
3334 | goto invalid_fld; | |
bcfc867d | 3335 | } |
18f0f978 CH |
3336 | |
3337 | /* | |
3338 | * WRITE SAME always has a sector sized buffer as payload, this | |
3339 | * should never be a multiple entry S/G list. | |
3340 | */ | |
3341 | if (!scsi_sg_count(scmd)) | |
bcfc867d | 3342 | goto invalid_param_len; |
18f0f978 | 3343 | |
ef2d7392 ST |
3344 | /* |
3345 | * size must match sector size in bytes | |
3346 | * For DATA SET MANAGEMENT TRIM in ACS-2 nsect (aka count) | |
3347 | * is defined as number of 512 byte blocks to be transferred. | |
3348 | */ | |
87fb6c31 | 3349 | |
63ccc191 CH |
3350 | size = ata_format_dsm_trim_descr(scmd, trmax, block, n_block); |
3351 | if (size != len) | |
3352 | goto invalid_param_len; | |
3353 | ||
3354 | if (ata_ncq_enabled(dev) && ata_fpdma_dsm_supported(dev)) { | |
3355 | /* Newer devices support queued TRIM commands */ | |
3356 | tf->protocol = ATA_PROT_NCQ; | |
3357 | tf->command = ATA_CMD_FPDMA_SEND; | |
3358 | tf->hob_nsect = ATA_SUBCMD_FPDMA_SEND_DSM & 0x1f; | |
4e5b6260 | 3359 | tf->nsect = qc->hw_tag << 3; |
63ccc191 CH |
3360 | tf->hob_feature = (size / 512) >> 8; |
3361 | tf->feature = size / 512; | |
3362 | ||
3363 | tf->auxiliary = 1; | |
3364 | } else { | |
7b203094 | 3365 | tf->protocol = ATA_PROT_DMA; |
63ccc191 CH |
3366 | tf->hob_feature = 0; |
3367 | tf->feature = ATA_DSM_TRIM; | |
3368 | tf->hob_nsect = (size / 512) >> 8; | |
3369 | tf->nsect = size / 512; | |
3370 | tf->command = ATA_CMD_DSM; | |
87fb6c31 MC |
3371 | } |
3372 | ||
18f0f978 CH |
3373 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48 | |
3374 | ATA_TFLAG_WRITE; | |
3375 | ||
3376 | ata_qc_set_pc_nbytes(qc); | |
3377 | ||
3378 | return 0; | |
3379 | ||
bcfc867d | 3380 | invalid_fld: |
0df10b84 | 3381 | ata_scsi_set_invalid_field(dev, scmd, fp, bp); |
bcfc867d HR |
3382 | return 1; |
3383 | invalid_param_len: | |
3384 | /* "Parameter list length error" */ | |
3385 | ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
3386 | return 1; | |
3387 | invalid_opcode: | |
3388 | /* "Invalid command operation code" */ | |
3389 | ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x20, 0x0); | |
18f0f978 CH |
3390 | return 1; |
3391 | } | |
3392 | ||
7b203094 ST |
3393 | /** |
3394 | * ata_scsiop_maint_in - Simulate a subset of MAINTENANCE_IN | |
3395 | * @args: device MAINTENANCE_IN data / SCSI command of interest. | |
3396 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
3397 | * | |
3398 | * Yields a subset to satisfy scsi_report_opcode() | |
3399 | * | |
3400 | * LOCKING: | |
3401 | * spin_lock_irqsave(host lock) | |
3402 | */ | |
3403 | static unsigned int ata_scsiop_maint_in(struct ata_scsi_args *args, u8 *rbuf) | |
3404 | { | |
3405 | struct ata_device *dev = args->dev; | |
3406 | u8 *cdb = args->cmd->cmnd; | |
0de55801 | 3407 | u8 supported = 0, cdlp = 0, rwcdlp = 0; |
7b203094 ST |
3408 | unsigned int err = 0; |
3409 | ||
002c4871 | 3410 | if (cdb[2] != 1 && cdb[2] != 3) { |
7b203094 ST |
3411 | ata_dev_warn(dev, "invalid command format %d\n", cdb[2]); |
3412 | err = 2; | |
3413 | goto out; | |
3414 | } | |
002c4871 | 3415 | |
7b203094 ST |
3416 | switch (cdb[3]) { |
3417 | case INQUIRY: | |
3418 | case MODE_SENSE: | |
3419 | case MODE_SENSE_10: | |
3420 | case READ_CAPACITY: | |
3421 | case SERVICE_ACTION_IN_16: | |
3422 | case REPORT_LUNS: | |
3423 | case REQUEST_SENSE: | |
3424 | case SYNCHRONIZE_CACHE: | |
ea045fd3 | 3425 | case SYNCHRONIZE_CACHE_16: |
7b203094 ST |
3426 | case REZERO_UNIT: |
3427 | case SEEK_6: | |
3428 | case SEEK_10: | |
3429 | case TEST_UNIT_READY: | |
3430 | case SEND_DIAGNOSTIC: | |
3431 | case MAINTENANCE_IN: | |
3432 | case READ_6: | |
3433 | case READ_10: | |
7b203094 ST |
3434 | case WRITE_6: |
3435 | case WRITE_10: | |
7b203094 ST |
3436 | case ATA_12: |
3437 | case ATA_16: | |
3438 | case VERIFY: | |
3439 | case VERIFY_16: | |
3440 | case MODE_SELECT: | |
3441 | case MODE_SELECT_10: | |
3442 | case START_STOP: | |
3443 | supported = 3; | |
3444 | break; | |
0de55801 DLM |
3445 | case READ_16: |
3446 | supported = 3; | |
3447 | if (dev->flags & ATA_DFLAG_CDL) { | |
3448 | /* | |
3449 | * CDL read descriptors map to the T2A page, that is, | |
3450 | * rwcdlp = 0x01 and cdlp = 0x01 | |
3451 | */ | |
3452 | rwcdlp = 0x01; | |
3453 | cdlp = 0x01 << 3; | |
3454 | } | |
3455 | break; | |
3456 | case WRITE_16: | |
3457 | supported = 3; | |
3458 | if (dev->flags & ATA_DFLAG_CDL) { | |
3459 | /* | |
3460 | * CDL write descriptors map to the T2B page, that is, | |
3461 | * rwcdlp = 0x01 and cdlp = 0x02 | |
3462 | */ | |
3463 | rwcdlp = 0x01; | |
3464 | cdlp = 0x02 << 3; | |
3465 | } | |
3466 | break; | |
7b203094 ST |
3467 | case ZBC_IN: |
3468 | case ZBC_OUT: | |
3469 | if (ata_id_zoned_cap(dev->id) || | |
3470 | dev->class == ATA_DEV_ZAC) | |
3471 | supported = 3; | |
3472 | break; | |
818831c8 CH |
3473 | case SECURITY_PROTOCOL_IN: |
3474 | case SECURITY_PROTOCOL_OUT: | |
3475 | if (dev->flags & ATA_DFLAG_TRUSTED) | |
3476 | supported = 3; | |
3477 | break; | |
7b203094 ST |
3478 | default: |
3479 | break; | |
3480 | } | |
3481 | out: | |
0de55801 DLM |
3482 | /* One command format */ |
3483 | rbuf[0] = rwcdlp; | |
3484 | rbuf[1] = cdlp | supported; | |
7b203094 ST |
3485 | return err; |
3486 | } | |
3487 | ||
28a3fc22 HR |
3488 | /** |
3489 | * ata_scsi_report_zones_complete - convert ATA output | |
3490 | * @qc: command structure returning the data | |
3491 | * | |
3492 | * Convert T-13 little-endian field representation into | |
3493 | * T-10 big-endian field representation. | |
3494 | * What a mess. | |
3495 | */ | |
3496 | static void ata_scsi_report_zones_complete(struct ata_queued_cmd *qc) | |
3497 | { | |
3498 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3499 | struct sg_mapping_iter miter; | |
3500 | unsigned long flags; | |
3501 | unsigned int bytes = 0; | |
3502 | ||
3503 | sg_miter_start(&miter, scsi_sglist(scmd), scsi_sg_count(scmd), | |
3504 | SG_MITER_TO_SG | SG_MITER_ATOMIC); | |
3505 | ||
3506 | local_irq_save(flags); | |
3507 | while (sg_miter_next(&miter)) { | |
3508 | unsigned int offset = 0; | |
3509 | ||
3510 | if (bytes == 0) { | |
3511 | char *hdr; | |
3512 | u32 list_length; | |
3513 | u64 max_lba, opt_lba; | |
3514 | u16 same; | |
3515 | ||
3516 | /* Swizzle header */ | |
3517 | hdr = miter.addr; | |
3518 | list_length = get_unaligned_le32(&hdr[0]); | |
3519 | same = get_unaligned_le16(&hdr[4]); | |
3520 | max_lba = get_unaligned_le64(&hdr[8]); | |
3521 | opt_lba = get_unaligned_le64(&hdr[16]); | |
3522 | put_unaligned_be32(list_length, &hdr[0]); | |
3523 | hdr[4] = same & 0xf; | |
3524 | put_unaligned_be64(max_lba, &hdr[8]); | |
3525 | put_unaligned_be64(opt_lba, &hdr[16]); | |
3526 | offset += 64; | |
3527 | bytes += 64; | |
3528 | } | |
3529 | while (offset < miter.length) { | |
3530 | char *rec; | |
3531 | u8 cond, type, non_seq, reset; | |
3532 | u64 size, start, wp; | |
3533 | ||
3534 | /* Swizzle zone descriptor */ | |
3535 | rec = miter.addr + offset; | |
3536 | type = rec[0] & 0xf; | |
3537 | cond = (rec[1] >> 4) & 0xf; | |
3538 | non_seq = (rec[1] & 2); | |
3539 | reset = (rec[1] & 1); | |
3540 | size = get_unaligned_le64(&rec[8]); | |
3541 | start = get_unaligned_le64(&rec[16]); | |
3542 | wp = get_unaligned_le64(&rec[24]); | |
3543 | rec[0] = type; | |
3544 | rec[1] = (cond << 4) | non_seq | reset; | |
3545 | put_unaligned_be64(size, &rec[8]); | |
3546 | put_unaligned_be64(start, &rec[16]); | |
3547 | put_unaligned_be64(wp, &rec[24]); | |
3548 | WARN_ON(offset + 64 > miter.length); | |
3549 | offset += 64; | |
3550 | bytes += 64; | |
3551 | } | |
3552 | } | |
3553 | sg_miter_stop(&miter); | |
3554 | local_irq_restore(flags); | |
3555 | ||
3556 | ata_scsi_qc_complete(qc); | |
3557 | } | |
3558 | ||
3559 | static unsigned int ata_scsi_zbc_in_xlat(struct ata_queued_cmd *qc) | |
3560 | { | |
3561 | struct ata_taskfile *tf = &qc->tf; | |
3562 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3563 | const u8 *cdb = scmd->cmnd; | |
3564 | u16 sect, fp = (u16)-1; | |
3565 | u8 sa, options, bp = 0xff; | |
3566 | u64 block; | |
3567 | u32 n_block; | |
3568 | ||
3569 | if (unlikely(scmd->cmd_len < 16)) { | |
3570 | ata_dev_warn(qc->dev, "invalid cdb length %d\n", | |
3571 | scmd->cmd_len); | |
3572 | fp = 15; | |
3573 | goto invalid_fld; | |
3574 | } | |
3575 | scsi_16_lba_len(cdb, &block, &n_block); | |
3576 | if (n_block != scsi_bufflen(scmd)) { | |
3577 | ata_dev_warn(qc->dev, "non-matching transfer count (%d/%d)\n", | |
3578 | n_block, scsi_bufflen(scmd)); | |
3579 | goto invalid_param_len; | |
3580 | } | |
3581 | sa = cdb[1] & 0x1f; | |
3582 | if (sa != ZI_REPORT_ZONES) { | |
3583 | ata_dev_warn(qc->dev, "invalid service action %d\n", sa); | |
3584 | fp = 1; | |
3585 | goto invalid_fld; | |
3586 | } | |
3587 | /* | |
3588 | * ZAC allows only for transfers in 512 byte blocks, | |
3589 | * and uses a 16 bit value for the transfer count. | |
3590 | */ | |
3591 | if ((n_block / 512) > 0xffff || n_block < 512 || (n_block % 512)) { | |
3592 | ata_dev_warn(qc->dev, "invalid transfer count %d\n", n_block); | |
3593 | goto invalid_param_len; | |
3594 | } | |
3595 | sect = n_block / 512; | |
3f17422b | 3596 | options = cdb[14] & 0xbf; |
28a3fc22 HR |
3597 | |
3598 | if (ata_ncq_enabled(qc->dev) && | |
3599 | ata_fpdma_zac_mgmt_in_supported(qc->dev)) { | |
3600 | tf->protocol = ATA_PROT_NCQ; | |
3601 | tf->command = ATA_CMD_FPDMA_RECV; | |
3602 | tf->hob_nsect = ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN & 0x1f; | |
4e5b6260 | 3603 | tf->nsect = qc->hw_tag << 3; |
28a3fc22 HR |
3604 | tf->feature = sect & 0xff; |
3605 | tf->hob_feature = (sect >> 8) & 0xff; | |
3f17422b | 3606 | tf->auxiliary = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES | (options << 8); |
28a3fc22 HR |
3607 | } else { |
3608 | tf->command = ATA_CMD_ZAC_MGMT_IN; | |
3609 | tf->feature = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES; | |
3610 | tf->protocol = ATA_PROT_DMA; | |
3611 | tf->hob_feature = options; | |
3612 | tf->hob_nsect = (sect >> 8) & 0xff; | |
3613 | tf->nsect = sect & 0xff; | |
3614 | } | |
3615 | tf->device = ATA_LBA; | |
3616 | tf->lbah = (block >> 16) & 0xff; | |
3617 | tf->lbam = (block >> 8) & 0xff; | |
3618 | tf->lbal = block & 0xff; | |
3619 | tf->hob_lbah = (block >> 40) & 0xff; | |
3620 | tf->hob_lbam = (block >> 32) & 0xff; | |
3621 | tf->hob_lbal = (block >> 24) & 0xff; | |
3622 | ||
3623 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48; | |
3624 | qc->flags |= ATA_QCFLAG_RESULT_TF; | |
3625 | ||
3626 | ata_qc_set_pc_nbytes(qc); | |
3627 | ||
3628 | qc->complete_fn = ata_scsi_report_zones_complete; | |
3629 | ||
3630 | return 0; | |
3631 | ||
3632 | invalid_fld: | |
3633 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); | |
3634 | return 1; | |
3635 | ||
3636 | invalid_param_len: | |
3637 | /* "Parameter list length error" */ | |
3638 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
3639 | return 1; | |
3640 | } | |
3641 | ||
27708a95 HR |
3642 | static unsigned int ata_scsi_zbc_out_xlat(struct ata_queued_cmd *qc) |
3643 | { | |
3644 | struct ata_taskfile *tf = &qc->tf; | |
3645 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3646 | struct ata_device *dev = qc->dev; | |
3647 | const u8 *cdb = scmd->cmnd; | |
2950cefa | 3648 | u8 all, sa; |
27708a95 HR |
3649 | u64 block; |
3650 | u32 n_block; | |
3651 | u16 fp = (u16)-1; | |
3652 | ||
3653 | if (unlikely(scmd->cmd_len < 16)) { | |
3654 | fp = 15; | |
3655 | goto invalid_fld; | |
3656 | } | |
3657 | ||
3658 | sa = cdb[1] & 0x1f; | |
3659 | if ((sa != ZO_CLOSE_ZONE) && (sa != ZO_FINISH_ZONE) && | |
3660 | (sa != ZO_OPEN_ZONE) && (sa != ZO_RESET_WRITE_POINTER)) { | |
3661 | fp = 1; | |
3662 | goto invalid_fld; | |
3663 | } | |
3664 | ||
3665 | scsi_16_lba_len(cdb, &block, &n_block); | |
3666 | if (n_block) { | |
3667 | /* | |
3668 | * ZAC MANAGEMENT OUT doesn't define any length | |
3669 | */ | |
3670 | goto invalid_param_len; | |
3671 | } | |
27708a95 | 3672 | |
2950cefa | 3673 | all = cdb[14] & 0x1; |
6edf1d4c DLM |
3674 | if (all) { |
3675 | /* | |
3676 | * Ignore the block address (zone ID) as defined by ZBC. | |
3677 | */ | |
3678 | block = 0; | |
3679 | } else if (block >= dev->n_sectors) { | |
b320a0a9 DLM |
3680 | /* |
3681 | * Block must be a valid zone ID (a zone start LBA). | |
3682 | */ | |
3683 | fp = 2; | |
3684 | goto invalid_fld; | |
3685 | } | |
27708a95 | 3686 | |
284b3b77 HR |
3687 | if (ata_ncq_enabled(qc->dev) && |
3688 | ata_fpdma_zac_mgmt_out_supported(qc->dev)) { | |
5b844b63 | 3689 | tf->protocol = ATA_PROT_NCQ_NODATA; |
284b3b77 | 3690 | tf->command = ATA_CMD_NCQ_NON_DATA; |
ee194b75 | 3691 | tf->feature = ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT; |
4e5b6260 | 3692 | tf->nsect = qc->hw_tag << 3; |
2950cefa | 3693 | tf->auxiliary = sa | ((u16)all << 8); |
284b3b77 HR |
3694 | } else { |
3695 | tf->protocol = ATA_PROT_NODATA; | |
3696 | tf->command = ATA_CMD_ZAC_MGMT_OUT; | |
3697 | tf->feature = sa; | |
2950cefa | 3698 | tf->hob_feature = all; |
284b3b77 | 3699 | } |
27708a95 HR |
3700 | tf->lbah = (block >> 16) & 0xff; |
3701 | tf->lbam = (block >> 8) & 0xff; | |
3702 | tf->lbal = block & 0xff; | |
3703 | tf->hob_lbah = (block >> 40) & 0xff; | |
3704 | tf->hob_lbam = (block >> 32) & 0xff; | |
3705 | tf->hob_lbal = (block >> 24) & 0xff; | |
3706 | tf->device = ATA_LBA; | |
3707 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48; | |
3708 | ||
3709 | return 0; | |
3710 | ||
18f0f978 | 3711 | invalid_fld: |
27708a95 HR |
3712 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
3713 | return 1; | |
27708a95 HR |
3714 | invalid_param_len: |
3715 | /* "Parameter list length error" */ | |
3716 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
18f0f978 CH |
3717 | return 1; |
3718 | } | |
3719 | ||
1b26d29c PB |
3720 | /** |
3721 | * ata_mselect_caching - Simulate MODE SELECT for caching info page | |
3722 | * @qc: Storage for translated ATA taskfile | |
3723 | * @buf: input buffer | |
3724 | * @len: number of valid bytes in the input buffer | |
7780081c | 3725 | * @fp: out parameter for the failed field on error |
1b26d29c PB |
3726 | * |
3727 | * Prepare a taskfile to modify caching information for the device. | |
3728 | * | |
3729 | * LOCKING: | |
3730 | * None. | |
3731 | */ | |
3732 | static int ata_mselect_caching(struct ata_queued_cmd *qc, | |
7780081c | 3733 | const u8 *buf, int len, u16 *fp) |
1b26d29c PB |
3734 | { |
3735 | struct ata_taskfile *tf = &qc->tf; | |
3736 | struct ata_device *dev = qc->dev; | |
d7372cb6 | 3737 | u8 mpage[CACHE_MPAGE_LEN]; |
1b26d29c | 3738 | u8 wce; |
7780081c | 3739 | int i; |
1b26d29c PB |
3740 | |
3741 | /* | |
3742 | * The first two bytes of def_cache_mpage are a header, so offsets | |
3743 | * in mpage are off by 2 compared to buf. Same for len. | |
3744 | */ | |
3745 | ||
7780081c | 3746 | if (len != CACHE_MPAGE_LEN - 2) { |
da299470 | 3747 | *fp = min(len, CACHE_MPAGE_LEN - 2); |
1b26d29c | 3748 | return -EINVAL; |
7780081c | 3749 | } |
1b26d29c PB |
3750 | |
3751 | wce = buf[0] & (1 << 2); | |
3752 | ||
3753 | /* | |
3754 | * Check that read-only bits are not modified. | |
3755 | */ | |
3756 | ata_msense_caching(dev->id, mpage, false); | |
7780081c HR |
3757 | for (i = 0; i < CACHE_MPAGE_LEN - 2; i++) { |
3758 | if (i == 0) | |
3759 | continue; | |
3760 | if (mpage[i + 2] != buf[i]) { | |
3761 | *fp = i; | |
3762 | return -EINVAL; | |
3763 | } | |
3764 | } | |
1b26d29c PB |
3765 | |
3766 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; | |
3767 | tf->protocol = ATA_PROT_NODATA; | |
3768 | tf->nsect = 0; | |
3769 | tf->command = ATA_CMD_SET_FEATURES; | |
3770 | tf->feature = wce ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF; | |
3771 | return 0; | |
3772 | } | |
3773 | ||
df60f9c6 DLM |
3774 | /* |
3775 | * Simulate MODE SELECT control mode page, sub-page 0. | |
06dbde5f | 3776 | */ |
df60f9c6 DLM |
3777 | static int ata_mselect_control_spg0(struct ata_queued_cmd *qc, |
3778 | const u8 *buf, int len, u16 *fp) | |
06dbde5f HR |
3779 | { |
3780 | struct ata_device *dev = qc->dev; | |
d7372cb6 | 3781 | u8 mpage[CONTROL_MPAGE_LEN]; |
06dbde5f | 3782 | u8 d_sense; |
7780081c | 3783 | int i; |
06dbde5f HR |
3784 | |
3785 | /* | |
3786 | * The first two bytes of def_control_mpage are a header, so offsets | |
3787 | * in mpage are off by 2 compared to buf. Same for len. | |
3788 | */ | |
3789 | ||
7780081c | 3790 | if (len != CONTROL_MPAGE_LEN - 2) { |
da299470 | 3791 | *fp = min(len, CONTROL_MPAGE_LEN - 2); |
06dbde5f | 3792 | return -EINVAL; |
7780081c | 3793 | } |
06dbde5f HR |
3794 | |
3795 | d_sense = buf[0] & (1 << 2); | |
3796 | ||
3797 | /* | |
3798 | * Check that read-only bits are not modified. | |
3799 | */ | |
673b2fe6 | 3800 | ata_msense_control_spg0(dev, mpage, false); |
7780081c HR |
3801 | for (i = 0; i < CONTROL_MPAGE_LEN - 2; i++) { |
3802 | if (i == 0) | |
3803 | continue; | |
3804 | if (mpage[2 + i] != buf[i]) { | |
3805 | *fp = i; | |
3806 | return -EINVAL; | |
3807 | } | |
3808 | } | |
06dbde5f HR |
3809 | if (d_sense & (1 << 2)) |
3810 | dev->flags |= ATA_DFLAG_D_SENSE; | |
3811 | else | |
3812 | dev->flags &= ~ATA_DFLAG_D_SENSE; | |
06dbde5f HR |
3813 | return 0; |
3814 | } | |
3815 | ||
df60f9c6 DLM |
3816 | /* |
3817 | * Translate MODE SELECT control mode page, sub-pages f2h (ATA feature mode | |
3818 | * page) into a SET FEATURES command. | |
3819 | */ | |
3820 | static unsigned int ata_mselect_control_ata_feature(struct ata_queued_cmd *qc, | |
3821 | const u8 *buf, int len, | |
3822 | u16 *fp) | |
3823 | { | |
3824 | struct ata_device *dev = qc->dev; | |
3825 | struct ata_taskfile *tf = &qc->tf; | |
3826 | u8 cdl_action; | |
3827 | ||
3828 | /* | |
3829 | * The first four bytes of ATA Feature Control mode page are a header, | |
3830 | * so offsets in mpage are off by 4 compared to buf. Same for len. | |
3831 | */ | |
3832 | if (len != ATA_FEATURE_SUB_MPAGE_LEN - 4) { | |
3833 | *fp = min(len, ATA_FEATURE_SUB_MPAGE_LEN - 4); | |
3834 | return -EINVAL; | |
3835 | } | |
3836 | ||
3837 | /* Check cdl_ctrl */ | |
3838 | switch (buf[0] & 0x03) { | |
3839 | case 0: | |
3840 | /* Disable CDL */ | |
3841 | cdl_action = 0; | |
3842 | dev->flags &= ~ATA_DFLAG_CDL_ENABLED; | |
3843 | break; | |
3844 | case 0x02: | |
3845 | /* Enable CDL T2A/T2B: NCQ priority must be disabled */ | |
3846 | if (dev->flags & ATA_DFLAG_NCQ_PRIO_ENABLED) { | |
3847 | ata_dev_err(dev, | |
3848 | "NCQ priority must be disabled to enable CDL\n"); | |
3849 | return -EINVAL; | |
3850 | } | |
3851 | cdl_action = 1; | |
3852 | dev->flags |= ATA_DFLAG_CDL_ENABLED; | |
3853 | break; | |
3854 | default: | |
3855 | *fp = 0; | |
3856 | return -EINVAL; | |
3857 | } | |
3858 | ||
3859 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; | |
3860 | tf->protocol = ATA_PROT_NODATA; | |
3861 | tf->command = ATA_CMD_SET_FEATURES; | |
3862 | tf->feature = SETFEATURES_CDL; | |
3863 | tf->nsect = cdl_action; | |
3864 | ||
3865 | return 1; | |
3866 | } | |
3867 | ||
3868 | /** | |
3869 | * ata_mselect_control - Simulate MODE SELECT for control page | |
3870 | * @qc: Storage for translated ATA taskfile | |
401f8ef3 | 3871 | * @spg: target sub-page of the control page |
df60f9c6 DLM |
3872 | * @buf: input buffer |
3873 | * @len: number of valid bytes in the input buffer | |
3874 | * @fp: out parameter for the failed field on error | |
3875 | * | |
3876 | * Prepare a taskfile to modify caching information for the device. | |
3877 | * | |
3878 | * LOCKING: | |
3879 | * None. | |
3880 | */ | |
3881 | static int ata_mselect_control(struct ata_queued_cmd *qc, u8 spg, | |
3882 | const u8 *buf, int len, u16 *fp) | |
3883 | { | |
3884 | switch (spg) { | |
3885 | case 0: | |
3886 | return ata_mselect_control_spg0(qc, buf, len, fp); | |
3887 | case ATA_FEATURE_SUB_MPAGE: | |
3888 | return ata_mselect_control_ata_feature(qc, buf, len, fp); | |
3889 | default: | |
3890 | return -EINVAL; | |
3891 | } | |
3892 | } | |
3893 | ||
1b26d29c | 3894 | /** |
01efd600 | 3895 | * ata_scsi_mode_select_xlat - Simulate MODE SELECT 6, 10 commands |
1b26d29c PB |
3896 | * @qc: Storage for translated ATA taskfile |
3897 | * | |
3898 | * Converts a MODE SELECT command to an ATA SET FEATURES taskfile. | |
3899 | * Assume this is invoked for direct access devices (e.g. disks) only. | |
3900 | * There should be no block descriptor for other device types. | |
3901 | * | |
3902 | * LOCKING: | |
3903 | * spin_lock_irqsave(host lock) | |
3904 | */ | |
3905 | static unsigned int ata_scsi_mode_select_xlat(struct ata_queued_cmd *qc) | |
3906 | { | |
3907 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3908 | const u8 *cdb = scmd->cmnd; | |
1b26d29c PB |
3909 | u8 pg, spg; |
3910 | unsigned six_byte, pg_len, hdr_len, bd_len; | |
df60f9c6 | 3911 | int len, ret; |
7780081c HR |
3912 | u16 fp = (u16)-1; |
3913 | u8 bp = 0xff; | |
f650ef61 YB |
3914 | u8 buffer[64]; |
3915 | const u8 *p = buffer; | |
1b26d29c | 3916 | |
1b26d29c PB |
3917 | six_byte = (cdb[0] == MODE_SELECT); |
3918 | if (six_byte) { | |
bcfc867d HR |
3919 | if (scmd->cmd_len < 5) { |
3920 | fp = 4; | |
1b26d29c | 3921 | goto invalid_fld; |
bcfc867d | 3922 | } |
1b26d29c PB |
3923 | |
3924 | len = cdb[4]; | |
3925 | hdr_len = 4; | |
3926 | } else { | |
bcfc867d HR |
3927 | if (scmd->cmd_len < 9) { |
3928 | fp = 8; | |
1b26d29c | 3929 | goto invalid_fld; |
bcfc867d | 3930 | } |
1b26d29c | 3931 | |
261e1507 | 3932 | len = get_unaligned_be16(&cdb[7]); |
1b26d29c PB |
3933 | hdr_len = 8; |
3934 | } | |
3935 | ||
3936 | /* We only support PF=1, SP=0. */ | |
bcfc867d HR |
3937 | if ((cdb[1] & 0x11) != 0x10) { |
3938 | fp = 1; | |
0df10b84 | 3939 | bp = (cdb[1] & 0x01) ? 1 : 5; |
1b26d29c | 3940 | goto invalid_fld; |
bcfc867d | 3941 | } |
1b26d29c PB |
3942 | |
3943 | /* Test early for possible overrun. */ | |
3944 | if (!scsi_sg_count(scmd) || scsi_sglist(scmd)->length < len) | |
3945 | goto invalid_param_len; | |
3946 | ||
1b26d29c PB |
3947 | /* Move past header and block descriptors. */ |
3948 | if (len < hdr_len) | |
3949 | goto invalid_param_len; | |
3950 | ||
f650ef61 YB |
3951 | if (!sg_copy_to_buffer(scsi_sglist(scmd), scsi_sg_count(scmd), |
3952 | buffer, sizeof(buffer))) | |
3953 | goto invalid_param_len; | |
3954 | ||
1b26d29c PB |
3955 | if (six_byte) |
3956 | bd_len = p[3]; | |
3957 | else | |
261e1507 | 3958 | bd_len = get_unaligned_be16(&p[6]); |
1b26d29c PB |
3959 | |
3960 | len -= hdr_len; | |
3961 | p += hdr_len; | |
3962 | if (len < bd_len) | |
3963 | goto invalid_param_len; | |
7780081c HR |
3964 | if (bd_len != 0 && bd_len != 8) { |
3965 | fp = (six_byte) ? 3 : 6; | |
3966 | fp += bd_len + hdr_len; | |
1b26d29c | 3967 | goto invalid_param; |
7780081c | 3968 | } |
1b26d29c PB |
3969 | |
3970 | len -= bd_len; | |
3971 | p += bd_len; | |
3972 | if (len == 0) | |
3973 | goto skip; | |
3974 | ||
3975 | /* Parse both possible formats for the mode page headers. */ | |
3976 | pg = p[0] & 0x3f; | |
3977 | if (p[0] & 0x40) { | |
3978 | if (len < 4) | |
3979 | goto invalid_param_len; | |
3980 | ||
3981 | spg = p[1]; | |
261e1507 | 3982 | pg_len = get_unaligned_be16(&p[2]); |
1b26d29c PB |
3983 | p += 4; |
3984 | len -= 4; | |
3985 | } else { | |
3986 | if (len < 2) | |
3987 | goto invalid_param_len; | |
3988 | ||
3989 | spg = 0; | |
3990 | pg_len = p[1]; | |
3991 | p += 2; | |
3992 | len -= 2; | |
3993 | } | |
3994 | ||
3995 | /* | |
df60f9c6 DLM |
3996 | * Supported subpages: all subpages and ATA feature sub-page f2h of |
3997 | * the control page. | |
1b26d29c | 3998 | */ |
df60f9c6 DLM |
3999 | if (spg) { |
4000 | switch (spg) { | |
4001 | case ALL_SUB_MPAGES: | |
4002 | /* All subpages is not supported for the control page */ | |
4003 | if (pg == CONTROL_MPAGE) { | |
4004 | fp = (p[0] & 0x40) ? 1 : 0; | |
4005 | fp += hdr_len + bd_len; | |
4006 | goto invalid_param; | |
4007 | } | |
4008 | break; | |
4009 | case ATA_FEATURE_SUB_MPAGE: | |
4010 | if (qc->dev->flags & ATA_DFLAG_CDL && | |
4011 | pg == CONTROL_MPAGE) | |
4012 | break; | |
4013 | fallthrough; | |
4014 | default: | |
4015 | fp = (p[0] & 0x40) ? 1 : 0; | |
4016 | fp += hdr_len + bd_len; | |
4017 | goto invalid_param; | |
4018 | } | |
7780081c | 4019 | } |
1b26d29c PB |
4020 | if (pg_len > len) |
4021 | goto invalid_param_len; | |
4022 | ||
4023 | switch (pg) { | |
4024 | case CACHE_MPAGE: | |
7780081c HR |
4025 | if (ata_mselect_caching(qc, p, pg_len, &fp) < 0) { |
4026 | fp += hdr_len + bd_len; | |
1b26d29c | 4027 | goto invalid_param; |
7780081c | 4028 | } |
1b26d29c | 4029 | break; |
06dbde5f | 4030 | case CONTROL_MPAGE: |
df60f9c6 DLM |
4031 | ret = ata_mselect_control(qc, spg, p, pg_len, &fp); |
4032 | if (ret < 0) { | |
7780081c | 4033 | fp += hdr_len + bd_len; |
06dbde5f | 4034 | goto invalid_param; |
7780081c | 4035 | } |
df60f9c6 DLM |
4036 | if (!ret) |
4037 | goto skip; /* No ATA command to send */ | |
1b26d29c | 4038 | break; |
df60f9c6 DLM |
4039 | default: |
4040 | /* Invalid page code */ | |
7780081c | 4041 | fp = bd_len + hdr_len; |
1b26d29c PB |
4042 | goto invalid_param; |
4043 | } | |
4044 | ||
4045 | /* | |
4046 | * Only one page has changeable data, so we only support setting one | |
4047 | * page at a time. | |
4048 | */ | |
4049 | if (len > pg_len) | |
4050 | goto invalid_param; | |
4051 | ||
4052 | return 0; | |
4053 | ||
4054 | invalid_fld: | |
0df10b84 | 4055 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); |
1b26d29c PB |
4056 | return 1; |
4057 | ||
4058 | invalid_param: | |
7780081c | 4059 | ata_scsi_set_invalid_parameter(qc->dev, scmd, fp); |
1b26d29c PB |
4060 | return 1; |
4061 | ||
4062 | invalid_param_len: | |
4063 | /* "Parameter list length error" */ | |
06dbde5f | 4064 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); |
1b26d29c PB |
4065 | return 1; |
4066 | ||
4067 | skip: | |
4068 | scmd->result = SAM_STAT_GOOD; | |
4069 | return 1; | |
4070 | } | |
4071 | ||
818831c8 CH |
4072 | static u8 ata_scsi_trusted_op(u32 len, bool send, bool dma) |
4073 | { | |
4074 | if (len == 0) | |
4075 | return ATA_CMD_TRUSTED_NONDATA; | |
4076 | else if (send) | |
4077 | return dma ? ATA_CMD_TRUSTED_SND_DMA : ATA_CMD_TRUSTED_SND; | |
4078 | else | |
4079 | return dma ? ATA_CMD_TRUSTED_RCV_DMA : ATA_CMD_TRUSTED_RCV; | |
4080 | } | |
4081 | ||
4082 | static unsigned int ata_scsi_security_inout_xlat(struct ata_queued_cmd *qc) | |
4083 | { | |
4084 | struct scsi_cmnd *scmd = qc->scsicmd; | |
4085 | const u8 *cdb = scmd->cmnd; | |
4086 | struct ata_taskfile *tf = &qc->tf; | |
4087 | u8 secp = cdb[1]; | |
4088 | bool send = (cdb[0] == SECURITY_PROTOCOL_OUT); | |
4089 | u16 spsp = get_unaligned_be16(&cdb[2]); | |
4090 | u32 len = get_unaligned_be32(&cdb[6]); | |
4091 | bool dma = !(qc->dev->flags & ATA_DFLAG_PIO); | |
4092 | ||
4093 | /* | |
4094 | * We don't support the ATA "security" protocol. | |
4095 | */ | |
4096 | if (secp == 0xef) { | |
4097 | ata_scsi_set_invalid_field(qc->dev, scmd, 1, 0); | |
4098 | return 1; | |
4099 | } | |
4100 | ||
4101 | if (cdb[4] & 7) { /* INC_512 */ | |
4102 | if (len > 0xffff) { | |
4103 | ata_scsi_set_invalid_field(qc->dev, scmd, 6, 0); | |
4104 | return 1; | |
4105 | } | |
4106 | } else { | |
4107 | if (len > 0x01fffe00) { | |
4108 | ata_scsi_set_invalid_field(qc->dev, scmd, 6, 0); | |
4109 | return 1; | |
4110 | } | |
4111 | ||
4112 | /* convert to the sector-based ATA addressing */ | |
4113 | len = (len + 511) / 512; | |
4114 | } | |
4115 | ||
4116 | tf->protocol = dma ? ATA_PROT_DMA : ATA_PROT_PIO; | |
4117 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR | ATA_TFLAG_LBA; | |
4118 | if (send) | |
4119 | tf->flags |= ATA_TFLAG_WRITE; | |
4120 | tf->command = ata_scsi_trusted_op(len, send, dma); | |
4121 | tf->feature = secp; | |
4122 | tf->lbam = spsp & 0xff; | |
4123 | tf->lbah = spsp >> 8; | |
4124 | ||
4125 | if (len) { | |
4126 | tf->nsect = len & 0xff; | |
4127 | tf->lbal = len >> 8; | |
4128 | } else { | |
4129 | if (!send) | |
4130 | tf->lbah = (1 << 7); | |
4131 | } | |
4132 | ||
4133 | ata_qc_set_pc_nbytes(qc); | |
4134 | return 0; | |
4135 | } | |
4136 | ||
b1ffbf85 MI |
4137 | /** |
4138 | * ata_scsi_var_len_cdb_xlat - SATL variable length CDB to Handler | |
4139 | * @qc: Command to be translated | |
4140 | * | |
4141 | * Translate a SCSI variable length CDB to specified commands. | |
4142 | * It checks a service action value in CDB to call corresponding handler. | |
4143 | * | |
4144 | * RETURNS: | |
4145 | * Zero on success, non-zero on failure | |
4146 | * | |
4147 | */ | |
4148 | static unsigned int ata_scsi_var_len_cdb_xlat(struct ata_queued_cmd *qc) | |
4149 | { | |
4150 | struct scsi_cmnd *scmd = qc->scsicmd; | |
4151 | const u8 *cdb = scmd->cmnd; | |
4152 | const u16 sa = get_unaligned_be16(&cdb[8]); | |
4153 | ||
4154 | /* | |
4155 | * if service action represents a ata pass-thru(32) command, | |
4156 | * then pass it to ata_scsi_pass_thru handler. | |
4157 | */ | |
4158 | if (sa == ATA_32) | |
4159 | return ata_scsi_pass_thru(qc); | |
4160 | ||
b1ffbf85 MI |
4161 | /* unsupported service action */ |
4162 | return 1; | |
4163 | } | |
4164 | ||
1da177e4 LT |
4165 | /** |
4166 | * ata_get_xlat_func - check if SCSI to ATA translation is possible | |
4167 | * @dev: ATA device | |
4168 | * @cmd: SCSI command opcode to consider | |
4169 | * | |
4170 | * Look up the SCSI command given, and determine whether the | |
4171 | * SCSI command is to be translated or simulated. | |
4172 | * | |
4173 | * RETURNS: | |
4174 | * Pointer to translation function if possible, %NULL if not. | |
4175 | */ | |
4176 | ||
4177 | static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd) | |
4178 | { | |
4179 | switch (cmd) { | |
4180 | case READ_6: | |
4181 | case READ_10: | |
4182 | case READ_16: | |
4183 | ||
4184 | case WRITE_6: | |
4185 | case WRITE_10: | |
4186 | case WRITE_16: | |
4187 | return ata_scsi_rw_xlat; | |
4188 | ||
0cdd6eb7 | 4189 | case WRITE_SAME_16: |
18f0f978 CH |
4190 | return ata_scsi_write_same_xlat; |
4191 | ||
1da177e4 | 4192 | case SYNCHRONIZE_CACHE: |
ea045fd3 | 4193 | case SYNCHRONIZE_CACHE_16: |
1da177e4 LT |
4194 | if (ata_try_flush_cache(dev)) |
4195 | return ata_scsi_flush_xlat; | |
4196 | break; | |
4197 | ||
4198 | case VERIFY: | |
4199 | case VERIFY_16: | |
4200 | return ata_scsi_verify_xlat; | |
b095518e JG |
4201 | |
4202 | case ATA_12: | |
4203 | case ATA_16: | |
4204 | return ata_scsi_pass_thru; | |
da61396d | 4205 | |
b1ffbf85 MI |
4206 | case VARIABLE_LENGTH_CMD: |
4207 | return ata_scsi_var_len_cdb_xlat; | |
4208 | ||
1b26d29c PB |
4209 | case MODE_SELECT: |
4210 | case MODE_SELECT_10: | |
4211 | return ata_scsi_mode_select_xlat; | |
1b26d29c | 4212 | |
28a3fc22 HR |
4213 | case ZBC_IN: |
4214 | return ata_scsi_zbc_in_xlat; | |
4215 | ||
27708a95 HR |
4216 | case ZBC_OUT: |
4217 | return ata_scsi_zbc_out_xlat; | |
4218 | ||
818831c8 CH |
4219 | case SECURITY_PROTOCOL_IN: |
4220 | case SECURITY_PROTOCOL_OUT: | |
4221 | if (!(dev->flags & ATA_DFLAG_TRUSTED)) | |
4222 | break; | |
4223 | return ata_scsi_security_inout_xlat; | |
4224 | ||
972dcafb DG |
4225 | case START_STOP: |
4226 | return ata_scsi_start_stop_xlat; | |
1da177e4 LT |
4227 | } |
4228 | ||
4229 | return NULL; | |
4230 | } | |
4231 | ||
15964ff7 | 4232 | int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, struct ata_device *dev) |
eb3f0f9c | 4233 | { |
e20e81a2 | 4234 | struct ata_port *ap = dev->link->ap; |
baf4fdfa ML |
4235 | u8 scsi_op = scmd->cmnd[0]; |
4236 | ata_xlat_func_t xlat_func; | |
84eac327 | 4237 | |
e20e81a2 NC |
4238 | /* |
4239 | * scsi_queue_rq() will defer commands if scsi_host_in_recovery(). | |
4240 | * However, this check is done without holding the ap->lock (a libata | |
4241 | * specific lock), so we can have received an error irq since then, | |
4242 | * therefore we must check if EH is pending, while holding ap->lock. | |
4243 | */ | |
4244 | if (ap->pflags & (ATA_PFLAG_EH_PENDING | ATA_PFLAG_EH_IN_PROGRESS)) | |
4245 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
4246 | ||
84eac327 WH |
4247 | if (unlikely(!scmd->cmd_len)) |
4248 | goto bad_cdb_len; | |
2115ea94 | 4249 | |
9162c657 | 4250 | if (dev->class == ATA_DEV_ATA || dev->class == ATA_DEV_ZAC) { |
84eac327 | 4251 | if (unlikely(scmd->cmd_len > dev->cdb_len)) |
baf4fdfa | 4252 | goto bad_cdb_len; |
eb3f0f9c | 4253 | |
baf4fdfa | 4254 | xlat_func = ata_get_xlat_func(dev, scsi_op); |
84eac327 WH |
4255 | } else if (likely((scsi_op != ATA_16) || !atapi_passthru16)) { |
4256 | /* relay SCSI command to ATAPI device */ | |
4257 | int len = COMMAND_SIZE(scsi_op); | |
baf4fdfa | 4258 | |
84eac327 WH |
4259 | if (unlikely(len > scmd->cmd_len || |
4260 | len > dev->cdb_len || | |
4261 | scmd->cmd_len > ATAPI_CDB_LEN)) | |
4262 | goto bad_cdb_len; | |
baf4fdfa | 4263 | |
84eac327 WH |
4264 | xlat_func = atapi_xlat; |
4265 | } else { | |
4266 | /* ATA_16 passthru, treat as an ATA command */ | |
4267 | if (unlikely(scmd->cmd_len > 16)) | |
4268 | goto bad_cdb_len; | |
baf4fdfa | 4269 | |
84eac327 | 4270 | xlat_func = ata_get_xlat_func(dev, scsi_op); |
baf4fdfa ML |
4271 | } |
4272 | ||
4273 | if (xlat_func) | |
84eac327 | 4274 | return ata_scsi_translate(dev, scmd, xlat_func); |
2115ea94 | 4275 | |
84eac327 WH |
4276 | ata_scsi_simulate(dev, scmd); |
4277 | ||
4278 | return 0; | |
baf4fdfa ML |
4279 | |
4280 | bad_cdb_len: | |
baf4fdfa | 4281 | scmd->result = DID_ERROR << 16; |
58bf201d | 4282 | scsi_done(scmd); |
baf4fdfa | 4283 | return 0; |
eb3f0f9c BK |
4284 | } |
4285 | ||
1da177e4 LT |
4286 | /** |
4287 | * ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device | |
23e701e6 | 4288 | * @shost: SCSI host of command to be sent |
1da177e4 | 4289 | * @cmd: SCSI command to be sent |
1da177e4 LT |
4290 | * |
4291 | * In some cases, this function translates SCSI commands into | |
4292 | * ATA taskfiles, and queues the taskfiles to be sent to | |
4293 | * hardware. In other cases, this function simulates a | |
4294 | * SCSI device by evaluating and responding to certain | |
4295 | * SCSI commands. This creates the overall effect of | |
4296 | * ATA and ATAPI devices appearing as SCSI devices. | |
4297 | * | |
4298 | * LOCKING: | |
23e701e6 | 4299 | * ATA host lock |
1da177e4 LT |
4300 | * |
4301 | * RETURNS: | |
2115ea94 TH |
4302 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
4303 | * 0 otherwise. | |
1da177e4 | 4304 | */ |
23e701e6 | 4305 | int ata_scsi_queuecmd(struct Scsi_Host *shost, struct scsi_cmnd *cmd) |
1da177e4 LT |
4306 | { |
4307 | struct ata_port *ap; | |
4308 | struct ata_device *dev; | |
4309 | struct scsi_device *scsidev = cmd->device; | |
2115ea94 | 4310 | int rc = 0; |
23e701e6 | 4311 | unsigned long irq_flags; |
1da177e4 | 4312 | |
35bb94b1 | 4313 | ap = ata_shost_to_port(shost); |
005a5a06 | 4314 | |
23e701e6 | 4315 | spin_lock_irqsave(ap->lock, irq_flags); |
1da177e4 | 4316 | |
1da177e4 | 4317 | dev = ata_scsi_find_dev(ap, scsidev); |
eb3f0f9c | 4318 | if (likely(dev)) |
b27dcfb0 | 4319 | rc = __ata_scsi_queuecmd(cmd, dev); |
eb3f0f9c | 4320 | else { |
1da177e4 | 4321 | cmd->result = (DID_BAD_TARGET << 16); |
58bf201d | 4322 | scsi_done(cmd); |
1da177e4 LT |
4323 | } |
4324 | ||
23e701e6 JG |
4325 | spin_unlock_irqrestore(ap->lock, irq_flags); |
4326 | ||
2115ea94 | 4327 | return rc; |
1da177e4 | 4328 | } |
a52fbcfc | 4329 | EXPORT_SYMBOL_GPL(ata_scsi_queuecmd); |
1da177e4 LT |
4330 | |
4331 | /** | |
4332 | * ata_scsi_simulate - simulate SCSI command on ATA device | |
c893a3ae | 4333 | * @dev: the target device |
1da177e4 | 4334 | * @cmd: SCSI command being sent to device. |
1da177e4 LT |
4335 | * |
4336 | * Interprets and directly executes a select list of SCSI commands | |
4337 | * that can be handled internally. | |
4338 | * | |
4339 | * LOCKING: | |
cca3974e | 4340 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
4341 | */ |
4342 | ||
b27dcfb0 | 4343 | void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd) |
1da177e4 LT |
4344 | { |
4345 | struct ata_scsi_args args; | |
057ace5e | 4346 | const u8 *scsicmd = cmd->cmnd; |
45394145 | 4347 | u8 tmp8; |
1da177e4 | 4348 | |
9a3dccc4 TH |
4349 | args.dev = dev; |
4350 | args.id = dev->id; | |
1da177e4 | 4351 | args.cmd = cmd; |
1da177e4 LT |
4352 | |
4353 | switch(scsicmd[0]) { | |
2dcb407e | 4354 | case INQUIRY: |
bcfc867d | 4355 | if (scsicmd[1] & 2) /* is CmdDt set? */ |
8fc6c065 | 4356 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e JG |
4357 | else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */ |
4358 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std); | |
4359 | else switch (scsicmd[2]) { | |
4360 | case 0x00: | |
4361 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00); | |
1da177e4 | 4362 | break; |
2dcb407e JG |
4363 | case 0x80: |
4364 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80); | |
1da177e4 | 4365 | break; |
2dcb407e JG |
4366 | case 0x83: |
4367 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83); | |
1da177e4 | 4368 | break; |
2dcb407e JG |
4369 | case 0x89: |
4370 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89); | |
4371 | break; | |
18f0f978 CH |
4372 | case 0xb0: |
4373 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b0); | |
4374 | break; | |
1e9dbc92 MW |
4375 | case 0xb1: |
4376 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1); | |
4377 | break; | |
02e0a604 MP |
4378 | case 0xb2: |
4379 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b2); | |
4380 | break; | |
6d1003ae | 4381 | case 0xb6: |
fe22e1c2 | 4382 | if (dev->flags & ATA_DFLAG_ZAC) |
6d1003ae | 4383 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b6); |
fe22e1c2 DLM |
4384 | else |
4385 | ata_scsi_set_invalid_field(dev, cmd, 2, 0xff); | |
4386 | break; | |
4387 | case 0xb9: | |
4388 | if (dev->cpr_log) | |
4389 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b9); | |
4390 | else | |
4391 | ata_scsi_set_invalid_field(dev, cmd, 2, 0xff); | |
4392 | break; | |
2dcb407e | 4393 | default: |
8fc6c065 | 4394 | ata_scsi_set_invalid_field(dev, cmd, 2, 0xff); |
1da177e4 | 4395 | break; |
2dcb407e JG |
4396 | } |
4397 | break; | |
4398 | ||
4399 | case MODE_SENSE: | |
4400 | case MODE_SENSE_10: | |
4401 | ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense); | |
4402 | break; | |
4403 | ||
2dcb407e JG |
4404 | case READ_CAPACITY: |
4405 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); | |
4406 | break; | |
4407 | ||
eb846d9f | 4408 | case SERVICE_ACTION_IN_16: |
2dcb407e | 4409 | if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16) |
1da177e4 | 4410 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
2dcb407e | 4411 | else |
8fc6c065 | 4412 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e | 4413 | break; |
1da177e4 | 4414 | |
2dcb407e JG |
4415 | case REPORT_LUNS: |
4416 | ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns); | |
4417 | break; | |
1da177e4 | 4418 | |
2dcb407e | 4419 | case REQUEST_SENSE: |
06dbde5f | 4420 | ata_scsi_set_sense(dev, cmd, 0, 0, 0); |
2dcb407e | 4421 | break; |
1da177e4 | 4422 | |
2dcb407e JG |
4423 | /* if we reach this, then writeback caching is disabled, |
4424 | * turning this into a no-op. | |
4425 | */ | |
4426 | case SYNCHRONIZE_CACHE: | |
ea045fd3 | 4427 | case SYNCHRONIZE_CACHE_16: |
df561f66 | 4428 | fallthrough; |
2dcb407e JG |
4429 | |
4430 | /* no-op's, complete with success */ | |
4431 | case REZERO_UNIT: | |
4432 | case SEEK_6: | |
4433 | case SEEK_10: | |
4434 | case TEST_UNIT_READY: | |
2dcb407e | 4435 | break; |
45394145 | 4436 | |
2dcb407e JG |
4437 | case SEND_DIAGNOSTIC: |
4438 | tmp8 = scsicmd[1] & ~(1 << 3); | |
a0c0b0e9 | 4439 | if (tmp8 != 0x4 || scsicmd[3] || scsicmd[4]) |
8fc6c065 | 4440 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e | 4441 | break; |
1da177e4 | 4442 | |
7b203094 ST |
4443 | case MAINTENANCE_IN: |
4444 | if (scsicmd[1] == MI_REPORT_SUPPORTED_OPERATION_CODES) | |
4445 | ata_scsi_rbuf_fill(&args, ata_scsiop_maint_in); | |
4446 | else | |
8fc6c065 | 4447 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
7b203094 ST |
4448 | break; |
4449 | ||
2dcb407e JG |
4450 | /* all other commands */ |
4451 | default: | |
06dbde5f | 4452 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x20, 0x0); |
2dcb407e | 4453 | /* "Invalid command operation code" */ |
2dcb407e | 4454 | break; |
1da177e4 | 4455 | } |
8fc6c065 | 4456 | |
58bf201d | 4457 | scsi_done(cmd); |
1da177e4 LT |
4458 | } |
4459 | ||
25df73d9 | 4460 | int ata_scsi_add_hosts(struct ata_host *host, const struct scsi_host_template *sht) |
f3187195 TH |
4461 | { |
4462 | int i, rc; | |
4463 | ||
4464 | for (i = 0; i < host->n_ports; i++) { | |
4465 | struct ata_port *ap = host->ports[i]; | |
4466 | struct Scsi_Host *shost; | |
4467 | ||
4468 | rc = -ENOMEM; | |
4469 | shost = scsi_host_alloc(sht, sizeof(struct ata_port *)); | |
4470 | if (!shost) | |
4471 | goto err_alloc; | |
4472 | ||
9ee4f393 | 4473 | shost->eh_noresume = 1; |
f3187195 TH |
4474 | *(struct ata_port **)&shost->hostdata[0] = ap; |
4475 | ap->scsi_host = shost; | |
4476 | ||
d9027470 | 4477 | shost->transportt = ata_scsi_transport_template; |
f3187195 TH |
4478 | shost->unique_id = ap->print_id; |
4479 | shost->max_id = 16; | |
4480 | shost->max_lun = 1; | |
4481 | shost->max_channel = 1; | |
b1ffbf85 | 4482 | shost->max_cmd_len = 32; |
f3187195 | 4483 | |
31cc23b3 TH |
4484 | /* Schedule policy is determined by ->qc_defer() |
4485 | * callback and it needs to see every deferred qc. | |
4486 | * Set host_blocked to 1 to prevent SCSI midlayer from | |
4487 | * automatically deferring requests. | |
4488 | */ | |
4489 | shost->max_host_blocked = 1; | |
4490 | ||
1d72f7ae | 4491 | rc = scsi_add_host_with_dma(shost, &ap->tdev, ap->host->dev); |
f3187195 | 4492 | if (rc) |
1d72f7ae | 4493 | goto err_alloc; |
f3187195 TH |
4494 | } |
4495 | ||
4496 | return 0; | |
4497 | ||
f3187195 TH |
4498 | err_alloc: |
4499 | while (--i >= 0) { | |
4500 | struct Scsi_Host *shost = host->ports[i]->scsi_host; | |
4501 | ||
1d72f7ae | 4502 | /* scsi_host_put() is in ata_devres_release() */ |
f3187195 | 4503 | scsi_remove_host(shost); |
f3187195 TH |
4504 | } |
4505 | return rc; | |
4506 | } | |
4507 | ||
45b8084f LW |
4508 | #ifdef CONFIG_OF |
4509 | static void ata_scsi_assign_ofnode(struct ata_device *dev, struct ata_port *ap) | |
4510 | { | |
4511 | struct scsi_device *sdev = dev->sdev; | |
4512 | struct device *d = ap->host->dev; | |
4513 | struct device_node *np = d->of_node; | |
4514 | struct device_node *child; | |
4515 | ||
4516 | for_each_available_child_of_node(np, child) { | |
4517 | int ret; | |
4518 | u32 val; | |
4519 | ||
4520 | ret = of_property_read_u32(child, "reg", &val); | |
4521 | if (ret) | |
4522 | continue; | |
4523 | if (val == dev->devno) { | |
4524 | dev_dbg(d, "found matching device node\n"); | |
4525 | sdev->sdev_gendev.of_node = child; | |
4526 | return; | |
4527 | } | |
4528 | } | |
4529 | } | |
4530 | #else | |
4531 | static void ata_scsi_assign_ofnode(struct ata_device *dev, struct ata_port *ap) | |
4532 | { | |
4533 | } | |
4534 | #endif | |
4535 | ||
1ae46317 | 4536 | void ata_scsi_scan_host(struct ata_port *ap, int sync) |
644dd0cc | 4537 | { |
1ae46317 TH |
4538 | int tries = 5; |
4539 | struct ata_device *last_failed_dev = NULL; | |
41bda9c9 | 4540 | struct ata_link *link; |
1ae46317 | 4541 | struct ata_device *dev; |
644dd0cc | 4542 | |
1ae46317 | 4543 | repeat: |
1eca4365 TH |
4544 | ata_for_each_link(link, ap, EDGE) { |
4545 | ata_for_each_dev(dev, link, ENABLED) { | |
41bda9c9 TH |
4546 | struct scsi_device *sdev; |
4547 | int channel = 0, id = 0; | |
3edebac4 | 4548 | |
1eca4365 | 4549 | if (dev->sdev) |
41bda9c9 | 4550 | continue; |
3f19ee8c | 4551 | |
41bda9c9 TH |
4552 | if (ata_is_host_link(link)) |
4553 | id = dev->devno; | |
4554 | else | |
4555 | channel = link->pmp; | |
4556 | ||
4557 | sdev = __scsi_add_device(ap->scsi_host, channel, id, 0, | |
4558 | NULL); | |
4559 | if (!IS_ERR(sdev)) { | |
4560 | dev->sdev = sdev; | |
45b8084f | 4561 | ata_scsi_assign_ofnode(dev, ap); |
41bda9c9 | 4562 | scsi_device_put(sdev); |
295124dc GG |
4563 | } else { |
4564 | dev->sdev = NULL; | |
41bda9c9 | 4565 | } |
3edebac4 | 4566 | } |
3f19ee8c | 4567 | } |
1ae46317 TH |
4568 | |
4569 | /* If we scanned while EH was in progress or allocation | |
4570 | * failure occurred, scan would have failed silently. Check | |
4571 | * whether all devices are attached. | |
4572 | */ | |
1eca4365 TH |
4573 | ata_for_each_link(link, ap, EDGE) { |
4574 | ata_for_each_dev(dev, link, ENABLED) { | |
4575 | if (!dev->sdev) | |
41bda9c9 TH |
4576 | goto exit_loop; |
4577 | } | |
1ae46317 | 4578 | } |
41bda9c9 TH |
4579 | exit_loop: |
4580 | if (!link) | |
1ae46317 TH |
4581 | return; |
4582 | ||
4583 | /* we're missing some SCSI devices */ | |
4584 | if (sync) { | |
4585 | /* If caller requested synchrnous scan && we've made | |
4586 | * any progress, sleep briefly and repeat. | |
4587 | */ | |
4588 | if (dev != last_failed_dev) { | |
4589 | msleep(100); | |
4590 | last_failed_dev = dev; | |
4591 | goto repeat; | |
4592 | } | |
4593 | ||
4594 | /* We might be failing to detect boot device, give it | |
4595 | * a few more chances. | |
4596 | */ | |
4597 | if (--tries) { | |
4598 | msleep(100); | |
4599 | goto repeat; | |
4600 | } | |
4601 | ||
a9a79dfe JP |
4602 | ata_port_err(ap, |
4603 | "WARNING: synchronous SCSI scan failed without making any progress, switching to async\n"); | |
1ae46317 TH |
4604 | } |
4605 | ||
ad72cf98 | 4606 | queue_delayed_work(system_long_wq, &ap->hotplug_task, |
1ae46317 | 4607 | round_jiffies_relative(HZ)); |
644dd0cc | 4608 | } |
0ea035a3 TH |
4609 | |
4610 | /** | |
4611 | * ata_scsi_offline_dev - offline attached SCSI device | |
4612 | * @dev: ATA device to offline attached SCSI device for | |
4613 | * | |
4614 | * This function is called from ata_eh_hotplug() and responsible | |
4615 | * for taking the SCSI device attached to @dev offline. This | |
cca3974e | 4616 | * function is called with host lock which protects dev->sdev |
0ea035a3 TH |
4617 | * against clearing. |
4618 | * | |
4619 | * LOCKING: | |
cca3974e | 4620 | * spin_lock_irqsave(host lock) |
0ea035a3 TH |
4621 | * |
4622 | * RETURNS: | |
4623 | * 1 if attached SCSI device exists, 0 otherwise. | |
4624 | */ | |
4625 | int ata_scsi_offline_dev(struct ata_device *dev) | |
4626 | { | |
4627 | if (dev->sdev) { | |
4628 | scsi_device_set_state(dev->sdev, SDEV_OFFLINE); | |
4629 | return 1; | |
4630 | } | |
4631 | return 0; | |
4632 | } | |
580b2102 TH |
4633 | |
4634 | /** | |
4635 | * ata_scsi_remove_dev - remove attached SCSI device | |
4636 | * @dev: ATA device to remove attached SCSI device for | |
4637 | * | |
4638 | * This function is called from ata_eh_scsi_hotplug() and | |
4639 | * responsible for removing the SCSI device attached to @dev. | |
4640 | * | |
4641 | * LOCKING: | |
4642 | * Kernel thread context (may sleep). | |
4643 | */ | |
4644 | static void ata_scsi_remove_dev(struct ata_device *dev) | |
4645 | { | |
9af5c9c9 | 4646 | struct ata_port *ap = dev->link->ap; |
580b2102 TH |
4647 | struct scsi_device *sdev; |
4648 | unsigned long flags; | |
4649 | ||
4650 | /* Alas, we need to grab scan_mutex to ensure SCSI device | |
4651 | * state doesn't change underneath us and thus | |
4652 | * scsi_device_get() always succeeds. The mutex locking can | |
4653 | * be removed if there is __scsi_device_get() interface which | |
4654 | * increments reference counts regardless of device state. | |
4655 | */ | |
cca3974e | 4656 | mutex_lock(&ap->scsi_host->scan_mutex); |
ba6a1308 | 4657 | spin_lock_irqsave(ap->lock, flags); |
580b2102 | 4658 | |
cca3974e | 4659 | /* clearing dev->sdev is protected by host lock */ |
580b2102 TH |
4660 | sdev = dev->sdev; |
4661 | dev->sdev = NULL; | |
4662 | ||
4663 | if (sdev) { | |
4664 | /* If user initiated unplug races with us, sdev can go | |
cca3974e | 4665 | * away underneath us after the host lock and |
580b2102 TH |
4666 | * scan_mutex are released. Hold onto it. |
4667 | */ | |
4668 | if (scsi_device_get(sdev) == 0) { | |
4669 | /* The following ensures the attached sdev is | |
4670 | * offline on return from ata_scsi_offline_dev() | |
4671 | * regardless it wins or loses the race | |
4672 | * against this function. | |
4673 | */ | |
4674 | scsi_device_set_state(sdev, SDEV_OFFLINE); | |
4675 | } else { | |
4676 | WARN_ON(1); | |
4677 | sdev = NULL; | |
4678 | } | |
4679 | } | |
4680 | ||
ba6a1308 | 4681 | spin_unlock_irqrestore(ap->lock, flags); |
cca3974e | 4682 | mutex_unlock(&ap->scsi_host->scan_mutex); |
580b2102 TH |
4683 | |
4684 | if (sdev) { | |
a9a79dfe JP |
4685 | ata_dev_info(dev, "detaching (SCSI %s)\n", |
4686 | dev_name(&sdev->sdev_gendev)); | |
580b2102 TH |
4687 | |
4688 | scsi_remove_device(sdev); | |
4689 | scsi_device_put(sdev); | |
4690 | } | |
4691 | } | |
4692 | ||
41bda9c9 TH |
4693 | static void ata_scsi_handle_link_detach(struct ata_link *link) |
4694 | { | |
4695 | struct ata_port *ap = link->ap; | |
4696 | struct ata_device *dev; | |
4697 | ||
1eca4365 | 4698 | ata_for_each_dev(dev, link, ALL) { |
41bda9c9 TH |
4699 | unsigned long flags; |
4700 | ||
4701 | if (!(dev->flags & ATA_DFLAG_DETACHED)) | |
4702 | continue; | |
4703 | ||
4704 | spin_lock_irqsave(ap->lock, flags); | |
4705 | dev->flags &= ~ATA_DFLAG_DETACHED; | |
4706 | spin_unlock_irqrestore(ap->lock, flags); | |
4707 | ||
f1bc1e4c AL |
4708 | if (zpodd_dev_enabled(dev)) |
4709 | zpodd_exit(dev); | |
4710 | ||
41bda9c9 TH |
4711 | ata_scsi_remove_dev(dev); |
4712 | } | |
4713 | } | |
4714 | ||
2f294968 KCA |
4715 | /** |
4716 | * ata_scsi_media_change_notify - send media change event | |
c5d0e6a0 | 4717 | * @dev: Pointer to the disk device with media change event |
2f294968 KCA |
4718 | * |
4719 | * Tell the block layer to send a media change notification | |
4720 | * event. | |
4721 | * | |
4722 | * LOCKING: | |
854c73a2 | 4723 | * spin_lock_irqsave(host lock) |
2f294968 | 4724 | */ |
854c73a2 | 4725 | void ata_scsi_media_change_notify(struct ata_device *dev) |
2f294968 | 4726 | { |
854c73a2 | 4727 | if (dev->sdev) |
f26792d5 JG |
4728 | sdev_evt_send_simple(dev->sdev, SDEV_EVT_MEDIA_CHANGE, |
4729 | GFP_ATOMIC); | |
2f294968 | 4730 | } |
2f294968 | 4731 | |
580b2102 TH |
4732 | /** |
4733 | * ata_scsi_hotplug - SCSI part of hotplug | |
65f27f38 | 4734 | * @work: Pointer to ATA port to perform SCSI hotplug on |
580b2102 TH |
4735 | * |
4736 | * Perform SCSI part of hotplug. It's executed from a separate | |
4737 | * workqueue after EH completes. This is necessary because SCSI | |
4738 | * hot plugging requires working EH and hot unplugging is | |
4739 | * synchronized with hot plugging with a mutex. | |
4740 | * | |
4741 | * LOCKING: | |
4742 | * Kernel thread context (may sleep). | |
4743 | */ | |
65f27f38 | 4744 | void ata_scsi_hotplug(struct work_struct *work) |
580b2102 | 4745 | { |
65f27f38 DH |
4746 | struct ata_port *ap = |
4747 | container_of(work, struct ata_port, hotplug_task.work); | |
41bda9c9 | 4748 | int i; |
580b2102 | 4749 | |
1fe9fb71 | 4750 | if (ap->pflags & ATA_PFLAG_UNLOADING) |
580b2102 | 4751 | return; |
580b2102 | 4752 | |
ad72cf98 | 4753 | mutex_lock(&ap->scsi_scan_mutex); |
580b2102 | 4754 | |
41bda9c9 TH |
4755 | /* Unplug detached devices. We cannot use link iterator here |
4756 | * because PMP links have to be scanned even if PMP is | |
4757 | * currently not attached. Iterate manually. | |
4758 | */ | |
4759 | ata_scsi_handle_link_detach(&ap->link); | |
4760 | if (ap->pmp_link) | |
4761 | for (i = 0; i < SATA_PMP_MAX_PORTS; i++) | |
4762 | ata_scsi_handle_link_detach(&ap->pmp_link[i]); | |
580b2102 TH |
4763 | |
4764 | /* scan for new ones */ | |
1ae46317 | 4765 | ata_scsi_scan_host(ap, 0); |
580b2102 | 4766 | |
ad72cf98 | 4767 | mutex_unlock(&ap->scsi_scan_mutex); |
580b2102 | 4768 | } |
83c47bcb TH |
4769 | |
4770 | /** | |
4771 | * ata_scsi_user_scan - indication for user-initiated bus scan | |
4772 | * @shost: SCSI host to scan | |
4773 | * @channel: Channel to scan | |
4774 | * @id: ID to scan | |
4775 | * @lun: LUN to scan | |
4776 | * | |
4777 | * This function is called when user explicitly requests bus | |
4778 | * scan. Set probe pending flag and invoke EH. | |
4779 | * | |
4780 | * LOCKING: | |
4781 | * SCSI layer (we don't care) | |
4782 | * | |
4783 | * RETURNS: | |
4784 | * Zero. | |
4785 | */ | |
d9027470 | 4786 | int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, |
9cb78c16 | 4787 | unsigned int id, u64 lun) |
83c47bcb TH |
4788 | { |
4789 | struct ata_port *ap = ata_shost_to_port(shost); | |
4790 | unsigned long flags; | |
41bda9c9 | 4791 | int devno, rc = 0; |
83c47bcb TH |
4792 | |
4793 | if (!ap->ops->error_handler) | |
4794 | return -EOPNOTSUPP; | |
4795 | ||
41bda9c9 | 4796 | if (lun != SCAN_WILD_CARD && lun) |
83c47bcb TH |
4797 | return -EINVAL; |
4798 | ||
071f44b1 | 4799 | if (!sata_pmp_attached(ap)) { |
41bda9c9 TH |
4800 | if (channel != SCAN_WILD_CARD && channel) |
4801 | return -EINVAL; | |
4802 | devno = id; | |
4803 | } else { | |
4804 | if (id != SCAN_WILD_CARD && id) | |
4805 | return -EINVAL; | |
4806 | devno = channel; | |
4807 | } | |
4808 | ||
ba6a1308 | 4809 | spin_lock_irqsave(ap->lock, flags); |
83c47bcb | 4810 | |
41bda9c9 TH |
4811 | if (devno == SCAN_WILD_CARD) { |
4812 | struct ata_link *link; | |
4813 | ||
1eca4365 | 4814 | ata_for_each_link(link, ap, EDGE) { |
41bda9c9 | 4815 | struct ata_eh_info *ehi = &link->eh_info; |
b558eddd | 4816 | ehi->probe_mask |= ATA_ALL_DEVICES; |
cf480626 | 4817 | ehi->action |= ATA_EH_RESET; |
41bda9c9 | 4818 | } |
83c47bcb | 4819 | } else { |
41bda9c9 | 4820 | struct ata_device *dev = ata_find_dev(ap, devno); |
83c47bcb TH |
4821 | |
4822 | if (dev) { | |
41bda9c9 | 4823 | struct ata_eh_info *ehi = &dev->link->eh_info; |
9af5c9c9 | 4824 | ehi->probe_mask |= 1 << dev->devno; |
cf480626 | 4825 | ehi->action |= ATA_EH_RESET; |
83c47bcb TH |
4826 | } else |
4827 | rc = -EINVAL; | |
4828 | } | |
4829 | ||
309afcb5 | 4830 | if (rc == 0) { |
83c47bcb | 4831 | ata_port_schedule_eh(ap); |
309afcb5 TH |
4832 | spin_unlock_irqrestore(ap->lock, flags); |
4833 | ata_port_wait_eh(ap); | |
4834 | } else | |
4835 | spin_unlock_irqrestore(ap->lock, flags); | |
83c47bcb TH |
4836 | |
4837 | return rc; | |
4838 | } | |
3057ac3c | 4839 | |
4840 | /** | |
d0171269 | 4841 | * ata_scsi_dev_rescan - initiate scsi_rescan_device() |
65f27f38 | 4842 | * @work: Pointer to ATA port to perform scsi_rescan_device() |
3057ac3c | 4843 | * |
d0171269 | 4844 | * After ATA pass thru (SAT) commands are executed successfully, |
ad72cf98 | 4845 | * libata need to propagate the changes to SCSI layer. |
3057ac3c | 4846 | * |
d0171269 TH |
4847 | * LOCKING: |
4848 | * Kernel thread context (may sleep). | |
3057ac3c | 4849 | */ |
65f27f38 | 4850 | void ata_scsi_dev_rescan(struct work_struct *work) |
3057ac3c | 4851 | { |
65f27f38 | 4852 | struct ata_port *ap = |
6aa0365a | 4853 | container_of(work, struct ata_port, scsi_rescan_task.work); |
41bda9c9 | 4854 | struct ata_link *link; |
f58229f8 | 4855 | struct ata_device *dev; |
f84e7e41 | 4856 | unsigned long flags; |
6aa0365a | 4857 | bool delay_rescan = false; |
3057ac3c | 4858 | |
ad72cf98 | 4859 | mutex_lock(&ap->scsi_scan_mutex); |
f84e7e41 TH |
4860 | spin_lock_irqsave(ap->lock, flags); |
4861 | ||
1eca4365 TH |
4862 | ata_for_each_link(link, ap, EDGE) { |
4863 | ata_for_each_dev(dev, link, ENABLED) { | |
41bda9c9 | 4864 | struct scsi_device *sdev = dev->sdev; |
3057ac3c | 4865 | |
1eca4365 | 4866 | if (!sdev) |
41bda9c9 TH |
4867 | continue; |
4868 | if (scsi_device_get(sdev)) | |
4869 | continue; | |
f84e7e41 | 4870 | |
6aa0365a DLM |
4871 | /* |
4872 | * If the rescan work was scheduled because of a resume | |
4873 | * event, the port is already fully resumed, but the | |
4874 | * SCSI device may not yet be fully resumed. In such | |
4875 | * case, executing scsi_rescan_device() may cause a | |
4876 | * deadlock with the PM code on device_lock(). Prevent | |
4877 | * this by giving up and retrying rescan after a short | |
4878 | * delay. | |
4879 | */ | |
4880 | delay_rescan = sdev->sdev_gendev.power.is_suspended; | |
4881 | if (delay_rescan) { | |
4882 | scsi_device_put(sdev); | |
4883 | break; | |
4884 | } | |
4885 | ||
41bda9c9 TH |
4886 | spin_unlock_irqrestore(ap->lock, flags); |
4887 | scsi_rescan_device(&(sdev->sdev_gendev)); | |
4888 | scsi_device_put(sdev); | |
4889 | spin_lock_irqsave(ap->lock, flags); | |
4890 | } | |
3057ac3c | 4891 | } |
f84e7e41 TH |
4892 | |
4893 | spin_unlock_irqrestore(ap->lock, flags); | |
ad72cf98 | 4894 | mutex_unlock(&ap->scsi_scan_mutex); |
6aa0365a DLM |
4895 | |
4896 | if (delay_rescan) | |
4897 | schedule_delayed_work(&ap->scsi_rescan_task, | |
4898 | msecs_to_jiffies(5)); | |
3057ac3c | 4899 | } |